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SDLRC - Region: Other African Countries & Regions - All


The Sheahan Diamond Literature Reference Compilation - Technical, Media and Corporate Articles based on Major Region - Other African Countries & Regions
The Sheahan Diamond Literature Reference Compilation is compiled by Patricia Sheahan who publishes on a monthly basis a list of new scientific articles related to diamonds as well as media coverage and corporate announcements called the Sheahan Diamond Literature Service that is distributed as a free pdf to a list of followers. Pat has kindly agreed to allow her work to be made available as an online digital resource at Kaiser Research Online so that a broader community interested in diamonds and related geology can benefit. The references are for personal use information purposes only; when available a link is provided to an online location where the full article can be accessed or purchased directly. Reproduction of this compilation in part or in whole without permission from the Sheahan Diamond Literature Service is strictly prohibited. Return to Diamond Region Index
Sheahan Diamond Literature Reference Compilation - Scientific Articles by Author for all years
A-An Ao+ B-Bd Be-Bk Bl-Bq Br+ C-Cg Ch-Ck Cl+ D-Dd De-Dn Do+ E F-Fn Fo+ G-Gh Gi-Gq Gr+ H-Hd He-Hn Ho+ I J K-Kg Kh-Kn Ko-Kq Kr+ L-Lh
Li+ M-Maq Mar-Mc Md-Mn Mo+ N O P-Pd Pe-Pn Po+ Q R-Rh Ri-Rn Ro+ S-Sd Se-Sh Si-Sm Sn-Ss St+ T-Th Ti+ U V W-Wg Wh+ X Y Z
Sheahan Diamond Literature Reference Compilation - Media/Corporate References by Name for all years
A B C D-Diam Diamonds Diamr+ E F G H I J K L M N O P Q R S T U V W X Y Z
Each article reference in the SDLRC is tagged with one or more key words assigned by Pat Sheahan to highlight the main topics of the article. In addition most references have been tagged with one or more region words. In an effort to make it easier for users to track down articles related to a specific region, KRO has extracted these region words and developed a list of major region words presented in the Major Region Index to which individual region words used in the article reference have been assigned. Each individual Region Report contains in chronological order all the references with a region word associated with the Major Region word. Depending on the total for each reference type - technical, media and corporate - the references will be either in their own technical, media or corporate Region Report, or combined in a single report. Where there is a significant number of technical references there will be a technical report dedicated to the technical articles while the media and corporate references are combined in a separate region report. References that were added in the most recent monthly update are highlighted in yellow within the Region Report. The Major Region words have been defined by a scale system of "general", "continent", "country", "state or province" and "regional". Major Region words at the smaller scales have been created only when there are enough references to make isolating them worthwhile. References not tagged with a Region are excluded, and articles with a region word not matched with a Major Region show up in the "Unknown" report.
Kimberlite - diamondiferous Lamproite - diamondiferous Lamprophyre - diamondiferous Other - diamondiferous
Kimberlite - non diamondiferous Lamproite - non diamondiferous Lamprophyre - non diamondiferous Other - non diamondiferous
Kimberlite - unknown Lamproite - unknown Lamprophyre - unknown Other - unknown
Future Mine Current Mine Former Mine Click on icon for details about each occurrence. Works best with Google Chrome.
CITATION: Faure, S, 2010, World Kimberlites CONSOREM Database (Version 3), Consortium de Recherche en Exploration Minérale CONSOREM, Université du Québec à Montréal, Numerical Database on consorem.ca. NOTE: This publicly available database results of a compilation of other public databases, scientific and governmental publications and maps, and various data from exploration companies reports or Web sites, If you notice errors, have additional kimberlite localizations that should be included in this database, or have any comments and suggestions, please contact the author specifying the ID of the kimberlite: [email protected]
Other African Countries & Regions - Technical, Media and Corporate
Posted/
Published
AuthorTitleSourceRegionKeywords
DS1860-1098
1899
Reclus, E.Universal GeographyUnknown., Vol. 13, PP. 149-155.Africa, South Africa, East AfricaGeography
DS1910-0159
1911
Anon.Diamonds in Liberia. 1911South African Mining Journal, AUGUST 12TH. P. 1003.West Africa, LiberiaDiamond Occurrences
DS1910-0563
1919
Anon.Diamonds of Gold CoastMinerals Yearbook For 1918, PP. 175-176.Ghana, West AfricaBlank
DS1910-0564
1919
Anon.Diamond, 1918The Mineral Industry During 1918, Vol. 28, PP. 605-607.Kenya, Gold Coast, Ghana, West AfricaBlank
DM1920-0492
1928
Anon.The Mineral Resources of TanganyikaThe Mining Journal, Vol. 161, PP. 342-343.Tanzania, East AfricaMineral Resources, Diamond
DS1920-0123
1923
Anon.The Angolan Diamond DealSth. Afr. Engineering And Mining Journal, Vol. 33, PT. 2, Feb. 3RD. P. 575.Angola, West AfricaDiamond Occurrence
DS1920-0218
1925
Anon.Diamanten in OstafrkiaMetall. Erz., P. 389.Tanzania, East AfricaAlluvial Diamond Placers
DS1920-0219
1925
Anon.Tanganyika Diamonds LtdMining Engineering Journal of South Africa, Vol. 36, PT. 1, No. 1782, PP. 321-322.Tanzania, East AfricaAlluvial Diamond Placers
DS1920-0265
1926
Anon.Tanganyika DiamondsMining Engineering Journal of South Africa, No. 1837, P. 414.Tanzania, East AfricaAlluvial Diamond Placers
DS1920-0266
1926
Anon.Notes on a Trip to Tanganyika, UgAnd a and KenyaMin. Ind. Magazine (johanneburg), Vol. 3, No. 4, PP. 95-98.; No. 5, PP. 139-140.Tanzania, Uganda, East Africa, KenyaTravelogue
DS1920-0358
1928
Anon.The Minerals of TanganyikaMining Engineering Journal of South Africa, Vol. 39, No. 1926, PP. 739-740.East Africa, TanzaniaMineral Catalogue, Diamond
DS1920-0370
1928
Anon.The Diamond Pipes of TanganyikaMining Engineering Journal of South Africa, Vol. 39, No. 1927, P. 17.Tanzania, East AfricaKimberlite Mines And Deposits, Geology
DS1920-0222
1925
Ball, S.H.Diamond Mining in the African Jungle, Belgian Congo and Angola.Mining Engineering Journal of South Africa, No. 1766, P. 642. ALSO: THE JEWELLER'S CIRCULAR No. 1768, PPAngola, Zaire, East Africa, Central AfricaAlluvial Diamond Placers
DS1920-0066
1921
Dixey, F.Report on the Geology of Sierra LeoneGeological Survey SIERRA LEONE Report, FOR THE YEAR 1921, 23P.Sierra Leone, West AfricaDiamonds
DS1920-0383
1928
Harger, H.S.Central Diamond Mines of Tanganyika. #1Mining Engineering Journal of South Africa, Vol. 39, No. 1933, PP. 157-161.Tanzania, East AfricaGeology, Kimberlite Mines And Deposits
DS1920-0384
1928
Harger, H.S.Central Diamond Mines of Tanganyika. #2Mining Engineering Journal of South Africa, Vol. 39, No. 1972, PP. 569-570.Tanzania, East AfricaGeology, Kimberlite Mines And Deposits
DS1920-0447
1929
Harger, H.S.Central Diamond Mines and TanganyikaMining Engineering Journal of South Africa, Vol. 40, No. 1972, PP. 566-570.Tanzania, East AfricaMining
DS1920-0237
1925
Krenkel, E.Die Geologie Afrikas, Part 1Berlin:, 461P.South Africa, Southwest Africa, East Africa, West Africa, NamibiaRegional Geology, Tectonics, Kimberley
DS1920-0294
1926
Range, P.Die Diamant lagerstatten AfrikasKol. Rundschau (berlin), Vol. 18, No. 1, PP. 17-19.South Africa, West Africa, East Africa, Southwest Africa, NamibiaDiamond Occurrences
DS1920-0170
1923
Rodriguez, F.Cruteri Generali Sulla Distribuzione Geografica Dei Giacimenti Carboniferi E Diamantiferi Nell'africa Australe Ed Orientale.Geological Society ITAL. BOLL., No. 42, PP. 235-240.South Africa, Tanzania, East AfricaGeology
DS1920-0307
1926
Wagner, P.A.Note on Kimberlite from Tanganyika TerritorySouth African Journal of Science, Vol. 23, PP. 204-205.Tanzania, East AfricaPetrology, Kimberlite Mines And Deposits
DS1930-0007
1930
Anon.Activity in Tanganyika Diamond FieldsTankanyika Review., Vol. 1, No. 7, P. 5.Tanzania, East AfricaHistory
DS1930-0048
1931
Anon.Diamond, 1930The Mineral Industry During 1930, Vol. 40, PP. 475-477.Democratic Republic of Congo, Angola, Ghana, French Equatorial Africa, TanzaniaCurrent Activities
DS1930-0093
1932
Anon.Diamond Found in TanzaniaThe Gemologist., APRIL, P. 285.Tanzania, East AfricaBlank
DS1930-0130
1933
Anon.Diamond, 1932-1933Minerals Yearbook During 1932-33, PP. 804-805.Ghana, West AfricaCurrent Activities
DS1930-0131
1933
Anon.Tanganyika Diamonds and GoldMining Engineering Journal of South Africa, Vol. 44, P. 55.Tanzania, East AfricaProduction
DS1930-0181
1935
Anon.Gold und DiamantenproduktionHochland., Vol. 6, P. 123.Tanzania, East AfricaGold, Diamond, Production
DS1930-0211
1936
Anon.Diamond Exports from TanganyikaMining Engineering Journal of South Africa, Vol. 47, P. 99Tanzania, East AfricaProduction
DS1930-0236
1937
Anon.Sierra Leone's Diamond FieldsThe Gemologist., OCTOBER, PP. 105-106; NOVEMBER P. 201.Sierra Leone, West AfricaBlank
DS1930-0268
1938
Anon.Diamond of Sierra LeoneThe Gemologist., FEBRUARY, P. 562.Sierra Leone, West AfricaBlank
DS1930-0013
1930
Beetz, P.F.W.Process of Concentration in Alluvial and Allied Diamond Placers of Southwest, South, Central and East Africa #2International CONGRESS Mines 6TH, Vol. 1, PP. 25-42.South Africa, East Africa, West Africa, Southwest Africa, NamibiaMining, Alluvial Diamond Placers
DS1930-0014
1930
Beetz, P.F.W.Process of Concentration in Alluvial and Allied Diamond Placers of Southwest, South, Central and East Africa #1International CONGRESS Mines 6TH, Vol. 6, PP. 49-68.South Africa, Southwest Africa, East Africa, West Africa, NamibiaMining, Alluvial Diamond Placers
DS1930-0154
1934
Brustier, L.Sur le Diamant du Kouango Francais (aef)Rev. Ind. Min. (st. Etienne), AUG. 15TH., PP. 435-436.West Africa, French Equatorial Africa, Central African RepublicDiamond
DS1930-0028
1930
Kitson, A.The Diamondiferous Deposits of the Gold Coast #2International Geological Congress 6TH., Vol. 1, PP. 43-48.West Africa, Gold CoastBlank
DS1930-0277
1938
Knetsch, G.Nach Dem Kriege Endeckte Diamant lagerstatten Nordlich des Aquators.Zeitschr. Deut. Geol. Gesell., Vol. 90, No. 8, PP. 457-469.West Africa, Sierra Leone, Liberia, Ivory Coast, NigeriaDiamond Deposits
DS1930-0170
1934
Lebedeff, V., Choubert, B.Etude de Quelques Concentris D'alluvions Modernes de L' AefSoc. Min. (france) Bulletin., PP. 244-248.West Africa, French Equatorial Africa, Central African RepublicAlluvial, Diamond, Heavy Minerals Concentrations
DS1930-0119
1932
Polinard, E.Les Formes Cristallines des Diamants de L'oubangui-chariSoc. Min. (france) Bulletin., Vol. 55, No. 7-8, PP. 213-235.West Africa, French Equatorial Africa, Central African RepublicCrystallography, Diamond
DS1930-0148
1933
Polinard, E.Les Gisements Diamantiferous et Accessoirement Auriferes Dela Region de Bria En Oubangui-chari.Soc. Geol. (belge) Annual, Vol. 57, PP. C65-85.West Africa, French Equatorial Africa, Central African RepublicDiamond Deposits, Gold
DS1930-0260
1937
Pollett, J.D.The Diamond Deposits of Sierra LeoneImp. Institute Bulletin., Vol. 35, No. 3, PP. 333-348.Sierra Leone, West Africa, Kono, Nimini, GoriGeology, Kimberlite History, Prospecting, Diamond Mining Recovery
DS1930-0204
1935
Stutzer, O.Die Wichtigsten Lagerstaetten der Nicht-erzeBorntraeger., SOUTH AFRICA PP. 10-90; southwest AFRICA/NAMIBIA PP. 90-118;West Africa, Central African Republic, Central Africa, AngolaDiamond Occurrences
DM1930-0314
1932
Teale, E.O.Shinyanga Diamond Fields 1932Mining Magazine (London), Vol. 46, P. 251.Tanzania, East AfricaGeology
DS1930-0085
1931
Teale, E.O.Shinyanga Diamond Fields 1931Geological Survey TANGANYIKA., SHORT PAPER No. 9, 39P.Tanzania, East AfricaDiamond Occurrences
DS1930-0124
1932
Teale, E.O.Kimberlite: the Occurrence of the Iramba Plateau, Mkalama And Singida District.Geological Survey TANGANYIKA Annual Report FOR THE YEAR 1931., PP. 12-14.Tanzania, East AfricaGeology
DS1930-0125
1932
Teale, E.O.The Kimberlite and Associated Occurrences of the Iramba Plateau.Geological Survey TANGANYIKA., SHORT PAPER No. 10, 7P.Tanzania, East AfricaGeology
DS1930-0310
1939
Williams, G.J.The Kimberlite Province and Associated Diamond Deposits of Tanganyika Territory.Dar Es Salam: Government Printer, Tang. Terr. Geological Survey Bulletin., No. 12, 41P. XEROXTanzania, East AfricaKimberlite, Janlib, Kimberley
DS1940-0160
1948
Andrade, C.F.Diamond Deposits in LundaInternational Geological Congress 18TH., PT. 14, P. 225.Angola, West AfricaGeology
DS1940-0064
1943
Anon.Great Diamond Finds in Sierra LeoneThe Gemologist., DECEMBER, P. 20.Sierra Leone, West AfricaBlank
DS1940-0201
1949
Anon.The Story of the William son Mine, TanganyikaThe Gemologist., DECEMBER, PP. 277-85.Tanzania, East AfricaBlank
DS1940-0096
1945
Gordon, W.T.A Note on Some Large Diamonds Recently Recovered from the Gravels of the Woyie River in Sierra Leone.Imp. Institute Bulletin., Vol. 43, No. 2, PP. 111-120. PP. 111-120.Sierra Leone, West AfricaGeology, Morphology
DS1940-0118
1946
Junner, N.R.Preliminary Report on the Sierra Leone Diamond FieldsInternal Report Sierra Leone Selection Trust., UNPUB.Sierra Leone, West AfricaGeology
DS1940-0034
1941
Obermuller, A.Description Petrologie et Geologie de la Region Forestiere De Guinee.Dakar., Bulletin. No. 5West Africa, GuineaGeology, Regional
DS1940-0188
1948
Roques, M.Le Precambrien de L'afrique Occidentale FrancaiseGeological Society FRANCE (PARIS) Bulletin., 5TH. SER. Vol. XVIII, PP. 8-9.West Africa, French Equatorial Africa, Central African Republic, Ivory Coast, GuineaPrecambrian, Geology
DS1940-0128
1946
Roques, M., Obermuller, A.Discordance de la Serie Antecambrienne du Simandou sur Les Gneiss de Guinee.|Academy of Science COMPTES RENDUS, Vol. 223, No. 26, Dec. 26TH.West Africa, GuineaStratigraphy
DS1940-0060
1942
Roush, G.A.Precious and Semi-precious StonesThe Mineral Industry, Vol. 50, PP. 463-483.United States, South Africa, West Africa, Gold Coast, Democratic Republic of Congo, AngolaCosts, Production, Accounts
DS1940-0134
1946
Teale, E.O., Oates, F.The Mineral Resources of Tanganyika TerritoryGeological Survey TANGANYIKA Bulletin., No. 16. 171P.Tanzania, East AfricaMineral Resources, Diamond
DS1950-0443
1959
Aicard, P.Application des Methodes Geochimiques (chromium et Nickel) a la Recherche de Pipes Kimberlitique: Relutats Obtenus sur un Pipe Deja Connu (kenieba) Soudan Francais.Annual Mines, PARIS, No. 2, PP. 1-3=106.West Africa, French Equatorial AfricaSekonomata, Geochemistry
DS1950-0164
1954
Andrade, C.F.On the Age of the So Called 'lunda Stage ' in the Diamandiferous Region of Northern Angola.Geological Society PORTUGAL BOL., Vol. 11, PP. 69-74.Angola, West AfricaGeology, Geochronology
DS1950-0052
1951
Anon.Diamond Mining in TanzaniaGems And Gemology, SUMMER, P. 76.Tanzania, East AfricaMining
DS1950-0092
1952
Anon.The William son Diamond Mine (1952)The Gemologist., JULY, PP. 127-132.Tanzania, East AfricaBlank
DS1950-0369
1958
Anon.William son Diamond Mine in Tanzania SoldThe Gemologist., AUGUST, P. 145.Tanzania, East AfricaBlank
DS1950-0257
1956
Bardet, M.G.Note sur la Relation Probable Entre Les Lignes de Fractures profondes de Disjonction Continentale et Les Venues Diamantiferes de l'afriqueChronique de Mines OUTREMER., Vol. 24, No. 235, PP. 2-6; No. 236 PP. 34-38.South Africa, West Africa, Guinea, Senegal, Mali, Ivory Coast, Sierra LeoneGeology, Tectonics
DS1950-0171
1954
Bassett, H.The Igwisi Craters and LavasGeological Survey Tanganyika Records, Vol. 4, PP. 81-92.Tanzania, East AfricaRelated Rocks
DS1950-0258
1956
Besson, M.Aspects Economique de la Recherche du Diamant En A.o.fRevue Ind. Miner. St. Etinne., No. I.R., PP. 547-549.West Africa, French Equatorial Africa, Central African RepublicDiamond Prospecting
DS1950-0095
1952
Bruet, E.Le Diamant (1952)Paris: Payot., 256P.South Africa, Arizona, French Equatorial Africa, Rocky MountainsKimberlite, Kimberley, History, Crystallography, Canyon Diablo
DS1950-0460
1959
Burke, L.J.A Short Account of the Discovery of the Major Diamond Deposits.Sierra Leone Studies, N.S. No. 12, PP. 316-328.Sierra Leone, West Africa, Central African Republic, French Equatorial Africa, GuineaHistory
DS1950-0376
1958
Charters, H.Picnic at PorokoroLondon:, Sierra Leone, West AfricaKimberley, History, Fiction, Janlib
DS1950-0377
1958
Cox, K.G.The Masukwe Complex (the Nuanetsi Igneous Axis)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 1B, PP. 5-6.Tanzania, East AfricaGeology, Related Rocks
DS1950-0463
1959
Cox, K.G.Regional Structure ( the Nuanetsi Igneous Axis)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 4D, PP. 32-35.Tanzania, East AfricaTectonics, Geology
DS1950-0268
1956
Dixey, F.The East African Rift System (1956)Colon. Geol. Min. Res. Bulletin., SUPPL. No. 1Sierra Leone, West AfricaGeology, Tectonics
DS1950-0466
1959
Dutoit, G.J.William son Diamond MineMine And Quarry Eng., Vol. 25, APRIL, PP. 90-103; PP. 146-153.; MAY PP. 194-200.Tanzania, East AfricaMining Methods
DS1950-0470
1959
Fozzard, P.M.H.Further Notes on the Volcanic Hills of IgwisiGeological Survey TANGANIKA RECORDS, Vol. 6, PP. 69-75.Tanzania, East AfricaGeology, Related Rocks
DS1950-0216
1955
Heidgen, H.The Diamond Seeker in Tanganyika. the Story of John Williamson.Austria: Verlag Styria., 139P.Tanzania, East AfricaKimberlite
DS1950-0475
1959
Heidigen, H.The Diamond Seeker. (biography of Williamson)London: Blackie., Tanzania, East AfricaKimberlite, Kimberley, Janlib, Biography
DS1950-0027
1950
Hennessey, M.N.Diamond Mining by Gold Coast AfricansCrown Colonist., Vol. 20, No. 224, JULY PP. 422-423.West Africa, Gold Coast, BonsahGeology, Alluvial Diamond Placers
DS1950-0395
1958
James, T.C., Mckie, D.The Alteration of Pyrochlore to Columbite in Carbonatites In Tanganyika.Mineralogical Magazine., Vol. 31, No. 242, SEPT. PP. 889-907.Tanzania, East AfricaMineralogy
DS1950-0489
1959
Mather, A.L.Geochemical Prospecting Studies in Sierra LeoneLondon: Ph.d. Thesis, University London., UNPUB.Sierra Leone, West AfricaKimberlite, Diamond, Geochemistry
DS1950-0413
1958
Mckinlay, A.C.M.Kimberlite Intrusions Cutting Karroo Sediments in the Ruhuhu Depression of Southwest Tanganyika.Geological Survey Tanganyika Records, Vol. 5, PP. 63-80.Tanzania, East AfricaGeology, Stratigraphy
DS1950-0417
1958
Monkman, L.J.The Maose-malibangwe Area (the Nuanetsi Igneous Axis)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 1D, PP. 9-10.Tanzania, East AfricaGeology, Related Rocks, Tectonics
DS1950-0080
1951
Pollett, J.D.The Geology and Mineral Resources of Sierra Leone (1951)Colon. Geol. Min. Res., Vol. 2, No. 1, PP. 3-28.Sierra Leone, West AfricaGeology, Diamonds
DS1950-0233
1955
Pollett, J.D.The Geology and Mineral Resources of Sierra Leone (1955)Geological Survey SIERRA LEONE Annual Report, FOR 1953Sierra Leone, West AfricaDiamonds, Geology
DS1950-0151
1953
Sampson, D.N.The Volcanic Hills of IgwisiGeological Survey Tanganyika Records, Vol. 3, PP. 49-53.Tanzania, East AfricaGeology, Related Rocks
DM1950-0530
1953
Spalding, J.The William son Diamond Mine (1953)Mining Magazine (London), Vol. 88, PP. 137-145.Tanzania, East AfricaGeology
DS1950-0428
1958
Stillman, C.J.The Northern Ring Complex (the Nuanetsi Igneous Axis)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 1A, PP. 2-4.Tanzania, East AfricaGeology, Tectonics
DS1950-0306
1956
Tremblay, M.Geology of the William son Diamond MineMontreal: Ph. D. Thesis, Mcgill University, Tanzania, East Africa, TanzaniaKimberlite, Mineralogy, Petrology, Mwadui
DS1950-0434
1958
Vail, J.R.The Dembe Divula Complex (the Nuanetsi Igneous Complex)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 1C, PP. 7-8.Tanzania, East AfricaGeology, Tectonics
DS1950-0510
1959
Vail, J.R.The Dembe Divula Complex ( the Nuanetsi Igneous Axis)Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 4B, PP. 27-29.Tanzania, East AfricaGeology, Tectonics
DS1950-0438
1958
Wilson, N.W., Marmo, V.Geology, Geomorphology and Mineral Occurrences of the Sula Mountains Schist Belt, Sierra Leone.Geological Survey SIERRA LEONE Bulletin., No. 1, 103P.Sierra Leone, West AfricaGeology, Diamonds
DS1950-0515
1959
Wood, D.N.The Mutandawhe Complex Lower Sabi Valley (the Nuanetsi Igneounited States Axis).Leeds University Research Institute of African Geology Annual Report, APP. C, Vol. 4E, PP. 36-40.Tanzania, East AfricaGeology, Related Rocks
DS1960-0771
1967
Acquaah, G.H.M.The Diamond Industry in the Bonsa ValleyB.a. Thesis, University Cape Coast., Ghana, West AfricaProduction, History
DS1960-0316
1963
Allen, J.B.The Identification of Eight Rocks from the Bobi and Sodiamci Areas, Ivory Coast Republic.Overseas Geological Survey Report, No. 128.West Africa, Ivory CoastKimberlite, Petrography
DS1960-0775
1967
Allen, P.M.The Geology of Part of the Orogenic Belt in Sierra LeoneLeeds: Ph.d. Thesis, University Leeds, Also: Geol. Rundsch., Vol. 58, PP. 588-620. IN 1969.Sierra Leone, West AfricaGeology, Tectonics, Rokell Formation, Regional Studies
DS1960-0903
1968
Allen, P.M.The Stratigraphy of a Geosynclinal Succession in Western Sierra Leone.Geology Magazine (London), Vol. 105, PP. 61-73.Sierra Leone, West AfricaGeology
DS1960-0776
1967
Allen, P.M., Snelling, N.J., Rex, D.C.Age Determinations from Sierra LeoneM.i.t. Annual Report 15th., NOS. 1381-1415.Sierra Leone, West AfricaGeochronology, Kimberlite
DS1960-0623
1966
Andrews-Jones, D.A.Geology and Mineral Resources of the Northern Kambai Hills Schist Belt and Adjacent Granulites.Geological Survey SIERRA LEONE Bulletin., No. 6, 100P.Sierra Leone, West AfricaGeology, Kimberlite
DS1960-0904
1968
Andrews-Jones, D.A.Petrogenesis and Geochemistry of the Rocks of the Kenema District, Sierra Leone.Leeds: Ph.d. Thesis, University Leeds, Sierra Leone, West AfricaGeochemistry, Genesis, Kimberlite, Mineralogy, Petrology
DM1960-1255
1964
Anon.Tanganyika and de BeersThe Mining Journal, Vol. 263, P. 127.Tanzania, East AfricaMining, Operations
DM1960-1256
1964
Anon.Tanganyika Diamond Exports UpThe Mining Journal, Vol. 263, PP. 154-155.Tanzania, East AfricaProduction, Mining
DM1960-1263
1965
Anon.Diamond Find in TanzaniaThe Mining Journal, Vol. 265, P. 31Tanzania, East AfricaGeology
DM1960-1297
1969
Anon.New Diamond Exploration Area Opened in AngolaDiamond News And South African Jeweller., JULY, P. 25.West Africa, AngolaProspecting
DS1960-0209
1962
Anon.Diamond Mining in Sierra LoeneThe Gemologist., SEPTEMBER, PP. 159-163.Sierra Leone, West AfricaBlank
DS1960-0913
1968
Anon.Commodity Review-diamondMineral Trade Notes, Vol. 65, No. 1Tanzania, East AfricaProduction
DS1960-1061
1969
Anon.Diamonds; Minerals Quarterly, 1969Minerals Quarterly, Vol. 1, No. 3Ghana, West Africa, Sierra Leone, Liberia, Ivory CoastProduction Current Activities
DS1960-0916
1968
Bakayoko, L.Diamonds in GuineaPrzeglad Geologiczny, Vol. 16, No. 5, P. 252.Guinea, West AfricaGeology
DS1960-0119
1961
Baker, C.O.Report of ActivitiesGeological Survey SIERRA LEONE Annual Report, FOR 1959/1960, 16P.Sierra Leone, West AfricaGeology, Kimberlite
DS1960-0120
1961
Barber, M.J.The Evaluation of a Portion of the Partially Abandoned Swamp Sembehun 14.Freetown: Sierra Leone Dev. Co. Ltd., UNPUB.Sierra Leone, West AfricaSampling, Evaluation, Diamond
DS1960-0322
1963
Barber, M.J.On the Diamond Potential of Some Previously Worked Swamps Undertaken in 1961-1962 on Behalf of the Sierra Leone Government.Freetown: Diamond Exploration Co. Ltd., Sierra Leone, West AfricaEvaluation, Sampling
DS1960-0631
1966
Bardet, M.G., Vachette, M.Determination of the Ages of West African Kimberlites and An Interpretation from the Dates of the Different Diamondifero united States Events in the World.International Symposium AFR. GEOL. 3RD., CGLU, Report No. 6660, 88P.Sierra Leone, West Africa, Guinea, Central African RepublicGeochronology
DS1960-0632
1966
Bardet, M.G., Vachette, M.Age Determinations of Kimberlites of West Africa and an Attempt to Interpret the Dating of Various Diamondiferous Occurrences in the World.French Geological Survey (BRGM) Report, No. 66, 59P.West Africa, Guinea, Sierra Leone, Liberia, Ivory CoastGeology, Geochronology
DS1960-0792
1967
Besson, M.La Teneur En Geikielite des Ilmenites des KimberlitesSoc. France Min. Cristall. Bulletin., Vol. 90, No. 2, PP. 192-201.West Africa, French Equatorial Africa, Central African RepublicMineral Chemistry
DS1960-0794
1967
Boadu, M.K.The Diamond Industry of Oda District with Special Reference to its Socio-economic Effects.Thesis, Winneba Advanced Teacher Training College., Ghana, West AfricaSociology, History
DS1960-0219
1962
Bonhomme, M.Contribution a l'etude Geochronologique de la Platforme de L'ouest Africain.Clermont University Fac. Sci. Annales Geol. Et Mineral., No. 5, PT. 5, 62P.West Africa, GuineaTectonics, Structure
DS1960-0639
1966
Boyd, F.R.Electron Probe Study of Diospidic Pyroxenes from KimberlitesCarnegie Institute Yearbook, FOR 1965, PP. 252-260.South Africa, Southwest Africa, Namibia, Tanzania, East AfricaKimberley, Louwrencia, Shinyanga, De Beers, Wesselton, Bultfontein
DS1960-0795
1967
Boyd, F.R.Electron Probe Study of Diopsidic Pyroxenes from KimberlitesCarnegie Institute Yearbook, FOR 1965, PP. 252-260.South Africa, Tanzania, Southwest Africa, Namibia, East AfricaMineral Chemistry
DS1960-0024
1960
Bruton, E.Diamond Mining in GuineaThe Gemologist., Vol. 29, No. 348, JULY, PP. 121-131.Guinea, West AfricaMining, History
DS1960-0025
1960
Burgess, P.H.E.Diamonds UnlimitedLondon: John Long, 190P.Tanzania, East AfricaHistory, Kimberley
DS1960-0816
1967
Cudjoe, J.E.Report on the Diamond Mining Corporation and Comments on Some Aspects of the Licensed Diggers Scheme.Accra:, Publishing SEPT. 6TH.South Africa, Ghana, West AfricaSociology, Mining
DS1960-0232
1962
Dawson, J.B.Sodium Carbonate Lavas from Oldoniyo LengaiNature., Vol. 195, PP. 1075-1076.Tanzania, East AfricaGeology, Related Rocks
DS1960-0233
1962
Dawson, J.B.The Geology of Oldoniyo LengaiBulletin. VOLCANOLOGIQUE., Vol. 24, PP. 349-387.Tanzania, East AfricaGeology, Related Rocks
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1963
Dawson, J.B.Minor Volcanic Features in the Gregory Rift Valley of Northern Tanganyika.Tanganyika Geological Survey Records, Vol. 10, PP. 54-55.Tanzania, East AfricaDiatreme
DS1960-0439
1964
Dawson, J.B.Carbonate Tuff Cones in Northern TanganyikaGeology Magazine (London), Vol. 101, PP. 129-137.Tanzania, East AfricaGeology, Related Rocks
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1968
Dawson, J.B.Northern TanganyikaJournal of PETROLOGY, Vol. 11, PP. 519-548.Tanzania, East AfricaGeology
DS1960-0536
1965
De Kun, N.The Mineral Resources of AfricaNew York: Elsevier., 740P.South Africa, West Africa, Central Africa, East AfricaMineral Resources, Occurrences, Diamond, Kimberley
DC1960-1317
1967
Diamond Corporation Of West Africa LimitedThe Story of the Diamond Corporation of West AfricaFreetown: Diamond Corp. West Africa., 19P.Sierra Leone, West AfricaBrochure, History
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1962
Downie, C., Wilkinson, P.The Explosion Craters of Basotu, Tanganyika TerritoryBulletin. VOLCANOLOGIQUE., Vol. 24, PP. 389-420.Tanzania, East AfricaDiatreme
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1969
Dutoit, G.J.The Formative Years of the Mwadui Diamond MineMwadui Eng. Association Journal, Vol. 1, P. 12.Tanzania, East AfricaHistory
DS1960-0337
1963
Edwards, C.B., Dribble, C.D., Mcbride, B., Roger, T.H.Prospecting for Diamonds in Tanganyika 1959-1961United Nations Report, UNPUBL.Tanzania, East AfricaGeology
DS1960-0660
1966
Edwards, C.B., Howkins, J.B.Kimberlites in Tanganyika with Special Reference to the Mwadui Occurrence.Economic Geology, Vol. 61, PP. 537-554.Tanzania, East AfricaGeology
DM1960-1265
1965
Fairbairn, W.C.Licensed Diamond Mining in Sierra LeoneMining Magazine (London), Vol. 112, No. 3, PP. 166-177.Sierra Leone, West AfricaGeology, Mining
DS1960-1101
1969
Fines, J.Industrie Miniere Au Sierra Leone En 1969Ambass. De France En Sierra Leone., 3P.Sierra Leone, West AfricaMining, Production, Diamonds
DS1960-0546
1965
Forristal, C.J.The Sewa Dredge ExperimentFreetown: Diamond Exploration Co. Ltd., UNPUB.Sierra Leone, West AfricaMining, Sampling
DS1960-0451
1964
Franklin, A.J.Diamond Mining in Sierra LeoneInvestors Guardian-mining World., JULY 10TH. PP. 132-133.Sierra Leone, West AfricaHistory, Mining Recovery Diamonds, Geology
DS1960-0241
1962
Fyfe, C.A History of Sierra LeoneLondon:, Sierra Leone, West AfricaKimberley, Janlib, History
DS1960-0664
1966
Garrett, R.G.Regional Geochemical Reconnaissance of Eastern Sierra LeoneLondon: Ph.d. Thesis, University London., 201P.Sierra Leone, West AfricaRegional Studies
DS1960-0826
1967
Garrett, R.G., Nichol, I.Regional Geochemical Reconnaissance in Eastern Sierra LeoneInstitute of Mining and Metallurgy. Transactions, Vol. 76, PP. B97-112.Sierra Leone, West AfricaGeochemistry
DS1960-0551
1965
Gerryts, E.West End Diamond MineSelection Trust International Report, JULY 30TH., 4P.Sierra Leone, West AfricaGeology
DS1960-0831
1967
Grantham, D.R.The Diamond Host Rocks of GhanaAfr. Geol. Symposium 4th., Held In Sheffield., 2P. abstract.Ghana, West AfricaHistory, Geology
DS1960-0051
1960
Grantham, D.R., Allen, J.B.Kimberlites in Sierra LeoneOverseas Geol. Min. Res., Vol. 8, PP. 5-25.Sierra Leone, West Africa, KoiduGeology
DS1960-0052
1960
Grantham, D.R., Allen, J.B.Kimberlite in Sierra LeoneGeological Survey SIERRA LEONE SHORT PAPER., No. 6West Africa, Sierra LeoneGeology, Petrography
DS1960-0957
1968
Gunn, C.B.Diamond Prospecting in LiberiaLapidary Journal, Vol. 22, No. 1, PP. 130-132.; No. 2, PP. 134-136.West Africa, LiberiaProspecting
DS1960-0351
1963
Haggard, H.J.E.Review of the Yengema Diamond FieldSierra Leone Selection Trust Ltd., UNPUB.Sierra Leone, West AfricaGeology
DS1960-1121
1969
Hall, P.K.The Diamond Fields of Sierra LeoneSierra Leone Geological Survey Bulletin., Vol. 1, No. 5, 133P.Sierra Leone, West Africa, Yengema, Koidu, Lower Moinde, YomadGeology, Kimberley, History, Exploration, Prospecting, Geomorpholog
DS1960-0150
1961
Harris, J.F.Summary of the Geology of Tanganyika. Part Iv. Economic Geology.Tanganyika Geological Survey Memoir., No. 1, 143P.Tanzania, East AfricaKimberley
DS1960-1123
1969
Harris, J.W.Syngenetic Mineral Inclusions in Diamond As Identified by X-ray Analysis.Journal of Gemology, Vol. 11, No. 7, PP. 256-262.Sierra Leone, West AfricaProbe, Mineralogy
DS1960-0960
1968
Hawthorne, J.B.Kimberlite SillsGeological Society of South Africa Transactions, Vol. 71, No. 3, PP. 291-311.South Africa, East AfricaGeology
DS1960-0843
1967
Hubbard, F.H.Unmetamorphosed Volcanic and Sedimentary Xenoliths in the Kimberlites of Sierra Leone.Nature., Vol. 214, No. 5092, PP. 1004-1005.Sierra Leone, West AfricaMineralogy
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1969
Hutchison, R.Rubidium-strontium and Sr87/86 in Ultrabasic Xenolith Host Rocks, lashaine Volcano.Iavcei Symposium Held Oxford., ABSTRACT VOLUME, P. 126. (abstract.)Tanzania, East AfricaRelated Rocks, Geochronology
DS1960-0560
1965
James, L.D.Regional Geochemical Reconnaissance in the Northern and Southern Sections of the Sula Mountains Schist Belt.London: Ph. D. Thesis, University London., 401P.Sierra Leone, West Africa, Kangari HillsGeochemistry, Regional Studies, Chromite
DS1960-1137
1969
Journeaux, C.P.Operations at Consolidated African Selection Trust Limited, akwatia, Ghana.Commonwealth Min. Met. Congress 9th., 25P.Ghana, West AfricaAlluvial Placers, Mining Recovery, Diamond
DS1960-0062
1960
King, A.J.Notes on the Alamasai Diamond MineGeological Survey Tanganyika Records, Vol. 8, PP. 63-66.Tanzania, East AfricaGeology, Mining
DS1960-0692
1966
Kozlov, I.T.On the Geology and Petrography of Kimberlites in GuineaSov. Geol., No. 9, PP. 113-125. French Geological Survey (BRGM) No. 5252, 13P. ENG. Transactions 9P.Guinea, West AfricaGeology, Petrography, Diamonds, Analyses
DS1960-1148
1969
Kozlov, I.T.Weathering Processes of a Kimberlite Pipe in GuineaLitol. Polez. Iskop., No. 2, PP. 90-94.Guinea, West AfricaPetrology, Bonankoro, Alteration
DS1960-0982
1968
Lovering, J.F., Widdowson, J.R.The Petrological Environment of Magnesium IlmenitesEarth and Planetary Science Letters, Vol. 4, PP. 310-314.Russia, South Africa, Sierra Leone, West Africa, United States, KentuckyGenesis, Kimberlite
DS1960-0167
1961
Mackenzie, D.H.Geology and Mineral Resources of the Gbangbama AreaGeological Survey SIERRA LEONE Bulletin., No. 3, UNPUBL.Sierra Leone, West AfricaGeology, Kimberlite, Diamond
DS1960-0373
1963
Makowiecki, L.Z.A.Detailed Surveys Were Also Made of a Number of Kimberlite Pipes.Overseas Geol. Min. Res., Vol. 9, No. 1, P.55.Tanzania, East AfricaGeophysics, Kimberlite
DS1960-0273
1962
Mannard, G.Geology of the Singida Kimberlite PipesMontreal: Ph.d. Thesis, University Mcgill, Tanzania, East AfricaGeology, Kimberlite, Mineralogy, Petrology
DS1960-0274
1962
Marmo, V.Geology and Mineral Resources of the Kangari Hills Schist Belt.Geological Survey SIERRA LEONE Bulletin., No. 2, 117P.Sierra Leone, West AfricaGeology, Kimberlite, Diamond
DS1960-0070
1960
Mason-Smith, D.J.Gravity Traverses over Kimberlite Pipes in TanganyikaOverseas Geological Survey Report, (UNPUBL.)Tanzania, East AfricaKimberlite, Geophysics
DS1960-1165
1969
Mcconnell, R.B.Fundamental Fault Zones in the Guiana and West African Shields in Relation to Presumed Axes of Atlantic Spreading.Geological Society of America (GSA) Bulletin., Vol. 80, PP. 1775-1782.South America, Guiana, West AfricaGeotectonics
DS1960-1171
1969
Meyer, H.O.A., Boyd, F.R.Inclusions in Diamonds #1Carnegie Institute Yearbook, FOR 1968, PP. 315-320.South Africa, Sierra Leone, West Africa, Venezuela, GhanaReview Paper, Research, Diamond Morphology
DS1960-0999
1968
Milton, C.The Matro-carbonatite Lava of Oldoniyo LengaiGeological Society of America (GSA), P. 202. (abstract.).Tanzania, East AfricaRelated Rocks
DS1960-1179
1969
Montadert, L.New Information on the Geological Structure of the Gulf of Guinea.Annual FAC. SCI. University CLERMONT., Vol. 19, No. 41, PP. 71-72.West Africa, GuineaSeismology, Structure, Tectonics
DS1960-1183
1969
Musoke, C.Tanzania's Diamond and the FutureAfr. Dev., FEBRUARY, PP. 32-33.Tanzania, East AfricaMining, Production
DS1960-0719
1966
Nicol, I., James, L.D., Viewing, K.D.Regional Geochemical Reconnaissance in Sierra LeoneInstitute of Mining and Metallurgy. Transactions, Vol. 75, PP. B146-161.Sierra Leone, West AfricaGeochemistry, Kimberlite, Diamonds
DS1960-0588
1965
Petkof, B.Gem Stones; Minerals Yearbook: Metals and Minerals, 1965Minerals Yearbook: Metals And Minerals, Vol. 1, PP. 507-514.Brazil, Cameroon, Canada, Quebec, India, West Africa, Ivory CoastReview Of Current Activities, Diamond Sorting Equipment
DS1960-0082
1960
Plessis, J.H. DU ( CAPTAIN ).Diamonds Are DangerousLondon:, Tanzania, East AfricaKimberley, Janlib, History
DS1960-0741
1966
Rumble, R.V., et al.Slimes Dam for the Cast Ltd. Diamond Mine in GhanaInstitute of Mining and Metallurgy. Transactions, Vol. 75, PP. A85-108.Ghana, West AfricaDiamond Mining Recovery
DS1960-0599
1965
Seliverstov, JU.La Geomorphologie de la Guinee et Ses Questions FondamentaleAkad. Nauk Sssr, Ser. Geol., Vol. 165, No. 1West Africa, GuineaGeomorphology
DS1960-0404
1963
Stracke, K.J.The Prospecting for Diamondiferous Kimberlite in Sierra LeonFreetown: Diamond Exploration Co. Ltd., UNPUB.Sierra Leone, West AfricaGeology
DS1960-1219
1969
Suwa, K., et al.Isotope Geochemistry and Petrology of the Mbeya Carbonatite southwest Tanzania, East Africa.Nagoya University Journal of Earth Sciences, Vol. 17, PP. 125-168.Tanzania, East AfricaRelated Rocks, Geology
DS1960-0882
1967
Thind, M.S.Geochemical Study of Kimberlites from TanzaniaLeeds University Research Institute of African Geology Annual Report, PP. 47-48.Tanzania, East AfricaGeochemistry
DS1960-1043
1968
Tordi, C.Traite de Prospection et Exploitation de Gisements Detritiques de Diamant En Afrique Occidentale.Amic Anc. Elev. Tech. Mines Al Esalaam Bulletin., No. 119, PP. 268-274.West AfricaProspecting, Alluvials, Diamonds
DS1960-0888
1967
Twum, E.A.Diamond Mining in the Akim Oda Areas of GhanaB.a. Thesis, University Cape Town., Ghana, West AfricaDiamond Mining Recovery
DS1960-0615
1965
Van der laan, H.L.The Sierra Leone Diamonds: an Economic Study Covering the Years 1952-1961.London: Oxford University Press, 234P.Sierra Leone, West AfricaEconomics, Production, History, Kimberley
DS1960-0411
1963
Viewing, K.A.Regional Geochemical Patterns Related to Mineralization in Central sierra Leone.London: Ph.d. Thesis, University London., 325P.Sierra Leone, West AfricaGeochemistry, Kimberlite, Diamond, Sula, Kangari
DS1960-0199
1961
Walker, C.W.Diamond Mining in the Gold Coast and Sierra LeoneCornish Institute Eng. Transactions, Vol. 16, FOR 1960-1961, PP. 1-25.Sierra Leone, Gold Coast, West AfricaMining Methods, Recovery, Alluvial Placer
DS1960-0310
1962
Wells, M.K.Unknown TitleGeological Survey SIERRA LEONE SHORT PAPER., No. 9Sierra Leone, West AfricaGeology
DS1960-0620
1965
Wilson, N.V.Geology and Mineral Resources of Part of the Gola Forest, Southern Sierra Leone.Geological Survey SIERRA LEONE Bulletin., No. 4, 102P.Sierra Leone, West AfricaGeology, Diamonds, Kimberlite
DS1960-1052
1968
Wiredu, P.K.Diamond Mining and its Role in the Geography of the Akim Oda Area.Msc. Thesis University Ghana., Ghana, West AfricaMining, History
DS1960-1231
1969
Wright, J.B., Mccurry, P.Note on Atlantic Fracture Zones and the Guinea CoastMining Geology (japan), Vol. 65, No. 1-2, PP.West Africa, GuineaTectonics, Structure
DS1970-0859
1974
Afanasyev, V.P., Ivaniv, I.N., Koptil, V.I., Kharkiv, A.D.Typomorphism of Diamonds from Kimberlite Veins and the Possible Bed Rock Sources of Diamond Bearing Placers in Northwestern Yakutia.Doklady Academy of Science USSR, Earth Science Section., Vol. 214, No. 1-6, PP. 154-157.Russia, West Africa, GuineaMineralogy, Genesis
DM1970-1037
1974
Anon.Central African Republic. Cominco Forms New Company for Diamond Mining and Prospecting.World Mining, Vol. 27, No. 2, P. 75.Central African Republic, West AfricaMining
DS1970-0016
1970
Anon.Diamonds - Still Going Strong After 30 YearsJenga., Vol. 7, PP. 5-6.Tanzania, East AfricaProduction, Mining, Williamson, Mwadui
DS1970-0225
1971
Anon.Diamonds; Industrial Minerals, June, 1971Industrial Minerals, JUNE, P. 26.Ghana, West AfricaProduction
DS1970-0230
1971
Anon.After the Diamond- a New Money Spinner?Jenga., Vol. 8, PP. 14-21.Tanzania, East AfricaEconomics
DS1970-0231
1971
Anon.New Sparkle in the Ndc Portfolio of CompaniesJenga., Vol. 9, PP. 32-33.Tanzania, East AfricaEconomics
DS1970-0470
1972
Anon.L'afrique Miniere- le DiamantInd. Trav. D'outremer., Vol. 20, PP. 492-494.Tanzania, East AfricaDiamond Mining
DS1970-0868
1974
Anon.How Dr. William son Nearly Missed Finding the Mwadui Diamondpipe.Indiaqua., No. 8, PT. 1 and 2Tanzania, East AfricaHistory
DS1970-0472
1972
Applin, K.E.S.Sampling of Alluvial Diamond Deposits in West AfricaInstitute of Mining and Metallurgy. Transactions, Vol. 81, PP. A62-A67; ALSO: DISCUSSION IN Vol. 82, PP. A32-3West Africa, Sierra LeoneDiamond Mining Recovery, Alluvials, Sampling, Evaluation
DS1970-0240
1971
Bank, H.Ueber Einige Edelsteine aus Tansania und Ihre VorkommenAbh. Hess. Landesamt. Bodenforsch. Dtsch., No. 60, PP. 203-215.Tanzania, East AfricaDiamond, Geology
DS1970-0627
1973
Bardet, M.G.Les Gisements Kimberlitiques de L'ouest Africain, Sierra LeoneFrench Geological Survey (BRGM) MEMOIR., No. 83, PT. 2, PP. 178-188.Sierra Leone, West Africa, Ivory Coast, GuineaGeology, Kimberlites
DS1970-0485
1972
Bufeev, Yu.V.Late Proterozoic Graben in West Africa and Its StructureGeotektonika., No. 2, PP. 61-66.West Africa, Guinea, Sierra Leone, GermanyStructure, Tectonics
DS1970-0261
1971
Choubert, G., Faure-Muret, A.Bouclier Eburneen or Libero-ivorienIn: Tectonique De L'afrique, Unesco Earth Sci. Ser., No. 6, PP. 185-200.West Africa, Guinea, Ivory Coast, LiberiaStructure, Tectonics
DS1970-0057
1970
Cudjoe, J.E.Progress in Mineral Exploration in Ghana During the Past Half Century.Ghana Geological Survey Bulletin., No. 38, PP. 1-10.Ghana, West AfricaGeology, Diamonds
DS1970-0272
1971
Dawson, J.B.A Preliminary Note on Eucolite from Odoniyo Lengai, TanzaniaMineralogical Magazine., Vol. 38, No. 295, P. 335.Tanzania, East AfricaMineralogy
DS1970-0273
1971
Dawson, J.B., Frisch, T.Eucolite from Oldoniyo Lengai, TanzaniaLithos, Vol. 4, No. 3, PP. 297-303.Tanzania, East AfricaMineralogy
DS1970-0061
1970
Dawson, J.B., Gate, N.H.Uranium and Thorium in Alkalic Rocks from the Active Carbonatite Volcano Oldoniyo Lengai Tanzania.Chemical Geology, Vol. 6, No. 3, PP. 221-231.Tanzania, East AfricaGeology, Related Rocks
DS1970-0063
1970
Dawson, J.B., Powell, D.G.The Natron Engaruka Explosion Crater Area Northern TanzaniaBulletin. VOLCANOLOGIQUE., Vol. 33, No. 3, PP. 791-817.Tanzania, East AfricaRelated Rocks, Geology
DS1970-0064
1970
Dawson, J.B., Powell, D.G., Reid, A.M.Ultrabasic Lava and Xenoliths from the Lashaine Volcano, Northern Tanganyika.Journal of PETROLOGY, Vol. 11, PP. 519-548.Tanzania, East AfricaRelated Rocks, Geology
DS1970-0662
1973
Dawson, J.B., Smith, J.V.Alkalic Pyroxenite Xenoliths from the Lashaine Volcano Northern Tanzania.Journal of PETROLOGY, Vol. 14, PP. 113-131.Tanzania, East AfricaXenoliths, Petrology
DS1970-0900
1974
Dillon, W.P., Sougy, J.M.A.Geology of West Africa and Canary and Cape Verde IslandsIn: The Ocean Basins And Margins, Volume 2, The North Atlant, PP. 315-390.West Africa, Guinea, Sierra Leone, Senegal, Ivory Coast, GhanaTectonics, Structure
DS1970-0669
1973
Donaldson, C., Reid, A.M., Ridley, W.I.The Igwisi Hills Extrusive Kimberlites1st International Kimberlite Conference, EXTENDED ABSTRACT VOLUME, PP. 93-94.Tanzania, East AfricaGeology
DS1970-0284
1971
Dyer, H.B.The Diamond Industry-past, Present and FutureInd. Diamond Rev., FOR 1971, No. 5, PP. 184-188.South Africa, Angola, West Africa, Southwest Africa, NamibiaHistory, Research
DS1970-0072
1970
Edwards, A.C.Report on TanzaniaMwadui Eng. Association Journal, MARCH, PP. 3-17.Tanzania, East AfricaDiamonds, Mining, Geology
DS1970-0074
1970
Edwards, R.Geology and Sampling of the Mwadui MineMwadui Eng. Association Journal, P. 1.Tanzania, East AfricaEvaluation, Sampling, Geology
DS1970-0913
1974
Fullerton, D.G.The Birth of Mwadui- 100, 000, 000 Years B.cMwadui Eng. Association Journal, Vol. 2, PP. 1-13.Tanzania, East AfricaGeochronology, Geology
DS1970-0514
1972
Gbakpoma, M.Activite Miniere de la Republique Centrafricaine En 1971Centrafricain Dir. Mines, No. 5Central African Republic, West AfricaDiamond Mining
DS1970-0516
1972
Gerryts, E.Diamond Prospecting by Geophysical Methods- a Review of Current Practice.Selection Trust In House Report., 22P.South Africa, Sierra Leone, West Africa, MaliGeophysics, Kimberlite
DS1970-0087
1970
Gittins, J.Carbonatites- Nature and OriginReprint of A Paper., 14P.Canada, Tanzania, Russia, South Africa, Sweden, East AfricaOverview, Classification, Geophysics
DS1970-0917
1974
Green, H.W., Gueguen, Y.Origin of the Kimberlite Pipes by Upwelling in the Upper Mantle.Nature., Vol. 249, No. 5458, PP. 617-620.South Africa, West AfricaKimberlite Genesis
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1974
Greenhalgh, P.An Economic History of the Ghanian Diamond Industry 1919-197Ph.d. Thesis, University Birmingham., 514P.Ghana, West AfricaEconomics, History
DS1970-0522
1972
Harris, J.W.Black Material on Mineral Inclusions and in Internal Fracture Planes in Diamond.Contributions to Mineralogy and Petrology, Vol. 35, No. 1, PP. 22-33.Sierra Leone, West AfricaMineralogy
DS1970-0523
1972
Harris, J.W., Vance, E.R.Induced Graphitization Around Crystalline Inclusions in DiamondContributions to Mineralogy and Petrology, Vol. 35, pp. 227-34.South Africa, West Africa, Sierra Leone, GhanaPetrology, Deposit - Premier, Finsch, Jagersfontein
DS1970-0090
1970
Hawkes, D.D.The Geology of Sierra LeoneInternational Conference AFR. GEOL. IBADJAN., PP. 471-482.Sierra Leone, West AfricaGeology
DS1970-0715
1973
Hisckman, G.M., Dickins, W.G.H.The Lands and Peoples of East AfricaNairobi: Longman., 178P.Tanzania, East AfricaHistory, Kimberley
DS1970-0308
1971
Hurley, P.M., Leo, G.W., White, R.W., Fairbairn, H.W.Liberian Age Province ( About 2700ma) and Adjacent Provinces in Liberia and Sierra Leone.Geological Society of America (GSA) Bulletin., Vol. 82, PP. 3483-3490.Sierra Leone, Liberia, West AfricaGeochronology
DS1970-0309
1971
Hurley, P.M., Leo, G.W., White, R.W., Fairbairn, H.W.Liberian Age Province ( About 2, 700 M.y.) and Adjacent Provinces in Liberia and Sierra Leone.Geological Society of America (GSA) Bulletin., Vol. 82, PP. 3483-3490.West Africa, Liberia, Sierra Leone, GuineaStructure, Tectonics
DS1970-0094
1970
Hutchison, R., Dawson, J.B.Rubidium-strontium and 87sr/86sr in Ultrabasic Xenoliths and Host Rock slashaine Volcano, Tanzania.Earth and Planetary Science Letters, Vol. 9, PP. 87-92.Tanzania, East AfricaGeochronology, Related Rocks
DS1970-0544
1972
King, O.F.Sierra Leone KimberlitesInternational Report NATIONAL DIAMOND MINING COMPANY of SIERRA LEON, 10P.Sierra Leone, West Africa, YengemaGeology, Geomorphology, Chemical Analyses, Geochemistry
DS1970-0110
1970
Knopf, D.Fiche Typologique du Champ Diamantifere de SeguelaAbidjan: S.o.d.e.m., No. 256.West Africa, Ivory CoastDiamonds
DS1970-0944
1974
Knyazev, G.I., Kozlov, I.T.Thermoelectric Properties of Ilmenite, As Prospecting and Evaluation Criteria for Diamond Deposits.Doklady Academy of Sciences ACAD. NAUK USSR, EARTH SCI. SECTION., Vol. 217, No. 6, PP. 1401-1404.Russia, West Africa, GuineaProspecting, Genesis
DS1970-0331
1971
Kukharenko, A.A.Mineralogy of Kimberlites of the Liberian Shield (russian)Sovetsk. Geol., Vol. 11, PP. 91-103.West Africa, Liberia, GuineaBlank
DS1970-0118
1970
Laing, E.M.Report on the Geology of Part of the Nimini Hills Schist Belt and Associated Sialic Rocks.Geological Survey SIERRA LEONE., UNPUBL. ReportWest Africa, Sierra LeoneGeology
DS1970-0744
1973
Lapido-Loureiro, F.E.Carbonatitis de AngolaMems Trab. Institute Invest. Cient. Angola., No. 11, 42P.Angola, West AfricaCarbonatite
DS1970-0747
1973
Lazarenkov, V.G., Ignatov, A.V., Loginova, T.I.Structure of the Feldspathoidal Syenitic Massif of the Area of the Los Pluton.Zap. Vses. Min. Obshch., Vol. 102, No. 1, PP. 43-53.Russia, West Africa, GuineaPetrology, Texture, Mineralogy
DS1970-0954
1974
Macfarlane, A., Crow, M.J., Arthurs, J.W., Wilkinson, A.F.The Geology and Mineral Resources of Northern Sierra Leone #1Overseas Institute of Geological Sciences International Report, No. 34, 203P.Sierra Leone, West AfricaKimberley, Geology, Diamonds
DS1970-0755
1973
Marx, W.T., Colchester, D.M., Stockdale prospecting ltd.El 17 Port Augusta Area South Australia Progress and Final Reports from October 1972 to April 1974.South Australia Geological Survey, No. E 2140, 29P.Australia, South Australia, Port Augusta, Egypt, CorraberraGeochemistry, Prospecting
DS1970-0133
1970
Mathias, M., Siebert, J.C.L., Rickwood, P.C.Some Aspects of the Mineralogy and Petrology of Ultramafic Xenoliths in Kimberlite.Contributions to Mineralogy and Petrology, Vol. 26, No. 2, PP. 75-123.Tanzania, East AfricaMineralogy, Petrology
DS1970-0143
1970
Mikhaylov, B.M., Kulikova, G.V.Facies Types of Weathering Crusts on Kimberlites of West Africa.In: [geology And Mineralogy of The Weathering Crust., NAUKA: IZD.-VO.Russia, West Africa, GuineaAlteration
DS1970-0780
1973
Nixon, P.H.Kimberlitic Volcanoes in East AfricaOverseas Geol. Min. Res., Vol. 41, PP. 119-138.East AfricaGeology
DS1970-0378
1971
Pallister, J.W.The Tectonics of East AfricaUnesco Earth Sci. Ser., No. 6, PP. 511-542.East AfricaRegional Tectonics
DS1970-0973
1974
Parra, A.H.N.Prospeccao Geoquimica de Quimberlitos Nas Bacias Fluvias Dolufule E Do Calcuilo.Serv. Geol. Min. (angola) Bol., No. 25, PP. 35-48.Angola, West AfricaProspecting, Diamonds, Kimberlites
DS1970-0392
1971
Rake, A.Smuggling Hits Tanzania Diamond IndustryAfr. Dev., MARCH, PP. 14-15.Tanzania, East AfricaHistory
DS1970-0587
1972
Reid, A.M., Dawson, J.B.Olivine Garnet Reaction in Peridotites from TanzaniaLithos, Vol. 5, PP. 115-124.Tanzania, East AfricaMineralogy
DS1970-0588
1972
Reis, B.Preliminary Note on the Distribution and Tectonic Control Of Kimberlites in Angola.International Geological Congress 24TH., Vol. 4, PP. 276-281.Angola, West AfricaGeology, Tectonics
DS1970-0402
1971
Ruzhitskii, V.O., Skulskii, V.D.The Diamond Deposits of AfricaMoscow: Viems, 77P.South Africa, Tanzania, East AfricaGeology, Mineral Occurrences
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1974
Switzer, G.S.Composition of Green Garnet from Tanzania and KenyaGems And Gemology, Vol. 14, No. 10, PP. 295-297.Tanzania, Kenya, East AfricaMineral Chemistry
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1970
Tverdokhlebov, V.A.Tectonic Structure of the Western Part of the Guinea- Liberian Shield.Akad. Nauk Sssr Sib. Otd. Voprosy Textoniki Dokembriya Konti, No. 129, PP. 190-197.West Africa, Guinea, Liberia, Senegal, Sierra Leone, Ivory CoastStructure, Tectonics
DS1970-1000
1974
Vallance, G.Geology of the Country between Moyamba and Bo. Report on Reconnaissance Mapping Sheets 76, 77, 78, 79, 88, 89, 90.Geological Survey SIERRA LEONE Report, 56P.Sierra Leone, West AfricaGeology, Kimberlite
DS1970-0454
1971
Wilson, A.N.International Diamond Annual. Chapter on Tanzania.. Thirty Years in Production.Johannesburg: International Diamond Annual, 278P.Tanzania, South Africa, East AfricaHistory, Kimberley
DS1970-1008
1974
Wolf, A.Die Bergbauliche Entwicklung in GhanaErzmetall. Dtsch., Vol. 27, No. 10, PP. 495-500.Ghana, West AfricaGeology, Diamonds
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1972
Wood, R.Early Precambrian Kambui Schist Belt, Sierra Leone and the Surrounding Basement.Nature., Vol. 236, No. 62, P. 14.Sierra Leone, West AfricaRelated Rocks
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1971
Zanone, L.Bibliography of the Geology and Mining Research in the Ivory Coast, 1855-1970.Abidjan: Soc. Pour Le Developpement Minier De la Cote D'ivoi, West Africa, Ivory CoastBibliography, Kimberley
DM1975-1273
1975
Anon.Mwadui Mine Gets New Lease of LifeDiamond News And South African Jeweller., Vol. 31, P. 25.Tanzania, East AfricaMining
DM1975-1281
1977
Anon.Diamond Output Still FallingMining Magazine, Vol. 136, No. 5, P. 335.Central African Republic, West AfricaProduction
DM1975-1294
1978
Anon.Central African Diamond QuestFinancial Times, No. 27577, P. 30.Central African Republic, West AfricaDiamond Prospecting
DM1975-1393
1979
Anon.Diamond Output of the Central African RepublicThe Mining Journal, Vol. 292, No. 7491, P. 208.Central African Republic, West AfricaProduction
DS1975-0009
1975
Anon.Diamonds U.s. Min. Trade Notes 1975U.s. Min. Trade Notes, Vol. 72, No. 4, PP. 14-15.Ghana, West AfricaDiamond Production
DS1975-0226
1976
Anon.Diamond Production. #1U.s. Min. Trade Notes, Vol. 73, No. 4, PP. 4-5.Central African Republic, West AfricaProduction Statistics
DS1975-0918
1979
Anon.Diamonds U.s. Min. Trade Notes 1979U.s. Min. Trade Notes, Vol. 76, No. 9, P. 4.Central African Republic, West AfricaProduction
DS1975-0233
1976
Applin, K.E.S.Exploration for Alluvial Diamond DepositsIn: Placer Exploration Mining Conference., PP. 1-21.South Africa, West AfricaSampling, Evaluation
DS1975-0936
1979
Balfour, I.Woyie River DiamondIndiaqua., Vol. 22, 1979/3, PP. 103-105.Sierra Leone, West AfricaDiamonds Notable
DS1975-0461
1977
Bessoles, B.Geologie de L'afrique; le Craton Ouest AfricainB.r.g.m. Memoir., No. 88, 402P.West Africa, Sierra Leone, Upper Volta, Mali, Ivory Coast, GuineaStructure, Tectonics
DS1975-0463
1977
Bishop, F.C., Smith, J.V., Dawson, J.B.Sodium, Potassium, Phosphorus and Titanium MINERALS in XENOLITHS from AFRICAN KIMBERLITES.Proceedings of Second International Kimberlite Conference, EXTENDED ABSTRACT VOLUME, 3P.South Africa, Tanzania, East AfricaMineralogy, Kimberlite, Xenoliths
DS1975-0693
1978
Bishop, F.C., Smith, J.V., Dawson, J.B.Sodium, Potassium, Phosphorus, and Titanium in GARNET, PYROXENE and OLIVINE from PERIDOTITE and ECLOGITE XENOLITHS from AFRICAN KIMBERLITES.Lithos, Vol. 11, PP. 155-173.Tanzania, East AfricaPetrography, Xenoliths, Kimberlites, Sodium, Potassium, Titanium
DS1975-0948
1979
Black, R., Caby, R., et al.Evidence for Late Precambrian Plate Tectonics in West AfricaNature., Vol. 278, PP. 223-227.West Africa, GuineaStructure, Tectonics
DS1975-0243
1976
Blundell, D.J.Active Faults in West AfricaEarth Planet. Sci. Letters, Vol. 31, PP. 287-290.West Africa, GuineaStructure, Tectonics
DS1975-0974
1979
Cilek, V.Geology and Mineral Deposits of TanzaniaGeol. Pruzkum., Vol. 21, No. 2, FEBRUARY PP. 48-51.East Africa, TanzaniaDiamond
DS1975-0983
1979
Conteh, J.S.Diamond Mining and Kono Religious Institutions: a Study in Social Change.Fort Wayne: Ph.d. Thesis, Indiana University, 244P.Sierra Leone, West AfricaPolitics, History
DS1975-0987
1979
Culver, S.J., Williams, H.R.Late Precambrian and Phanerozic Geology of Sierra LeoneQuarterly Journal of Geological Society (London), Vol. 136, PP. 605-618.Sierra Leone, West AfricaGeology
DS1975-0721
1978
Culver, S.J., Williams, H.R., Bulletin, P.A.Infracambrian Glaciogenic Sediments from Sierra LeoneNature., Vol. 274, PP. 49-51.Sierra Leone, West AfricaGeology, Geomorphology
DS1975-0997
1979
Dixon, C.J.The Mwadui Diamond PipeNew York: Cornell Press, Atlas of Economic Mineral Deposits, 143P.Tanzania, East AfricaGeology, Kimberley
DS1975-0998
1979
Donkers, J.M.Equipment for Off-shore MiningResources Minerales Sous Marines, Scolari, G. Editor., French Geological Survey (BRGM) No. 7, PP. 275-295.South Africa, West AfricaDiamond Mining Recovery, Alluvials, Marine Placers
DS1975-1001
1979
Eales, E.V., Snowden, D.V.Chromiferous Spinels of the Elephant's Head DikeMineralium Deposita., Vol. 14, No. 2, PP. 227-242.Tanzania, East AfricaRelated Rocks
DS1975-0740
1978
Fairbairn, W.C.Diamond Digging in West Africa, Lesotho and South AmericaSmall Scale Mining of The World, Conference Held Juriaco Mex, PP. 678-707.West Africa, Lesotho, South America, Sierra Leone, Sewa, LiberiaDiamond Mining Recovery, Kimberlite Pipes
DS1975-1014
1979
Fairhead, J.D.A Gravity Link between Domally Uplifted Cainozoic Volcanic Centres of north Africa and its Similarity to the East African Rift System Anomaly.Earth Planet. Sci. Letters, Vol. 42, PP. 109-113.Africa, East AfricaGeotectonics, East African Rift, Bouguer Anomaly Map, Geophysics
DS1975-0507
1977
Fieremans, C.Het Voorkommen Van Diamant Langsheen de Kwango Riviere in Angola En Zaire.Acad. Roy. Sci. Outre-mer Cl. Sci. Nat. Med. Memoire., IN-8, GENEESKUNDIGE WETENSCHAPPEN N.R., Vol. 20, No. 1, PP.Angola, Zaire, Central Africa, East AfricaDiamond Diggings
DS1975-1033
1979
Gerasimovsky, V.I.Geochemistry of Effusive Rocks of Rift ZonesPhysics and Chemistry of the Earth., Vol. 11, PP. 361-366.East AfricaLeucitite, Leucite
DS1975-0288
1976
Hamilton-Hill, D. (PSEUD. J. GAWAINE).The Diamond SeekerJohannesburg: Macmillan., 184P.Tanzania, East AfricaKimberlite, Kimberley:janlib, Biography, Williamson
DS1975-1059
1979
Hastings, D.A., Bacon, M.Geologic Structure and Evolution of Keta Basin, West AfricaGeological Society of America (GSA) Bulletin., Vol. 90, PP. 889-892.West Africa, GuineaStructure, Tectonics
DS1975-1060
1979
Hastings, D.A., Sharp, W.E., Williams, H.R.An Alternative Hypothesis for the Origin of West African Kimberlites.Nature., Vol. 277, No. 5692, PP. 152-153.West Africa, GuineaKimberlite Genesis
DS1975-0758
1978
Hay, R.L.Melilitite-carbonatite Tuffs in the Laetolil Beds of TanzaniContributions to Mineralogy and Petrology, Vol. 67, PP. 357-367.Tanzania, East AfricaRelated Rocks
DS1975-0111
1975
Hurley, P.M., Fairbairn, H.W., Gaudette, H.E.Progress Report on Early Archean Rocks in Liberia, Sierra Leone and Guyana and Their General Stratigraphic Setting.In: The Early History of The Earth, Windley, B.f. Editor, Jo, PP. 511-524. 619P.Sierra Leone, Liberia, Guiana, West Africa, South AmericaGeology
DS1975-0112
1975
Ivaniv, I.N., Bartoshinskiy, Z.V.Some Properties of Guinea DiamondsMineral. Sbor. Lvovsk University., Vol. 29, No. 3, PP. 21-30.Guinea, West AfricaDiamond Morphology, Genesis
DS1975-1099
1979
King, A.W., Dawson, A.L.The Geology of the Mangochi Majanjila AreaMalawi Geological Survey Bulletin, Vol. 35, 69pMalawiKimberlite
DS1975-0117
1975
Kresten, P., Fels, P., Berggren , G.Kimberlitic Zircons- a Possible Aid in Prospecting for Kimberlites.Mineralium Deposita., Vol. 10, PP. 47-56.Lesotho, South Africa, Tanzania, East AfricaMorphology, Inclusions, Mineral Chemistry, Alteration
DS1975-0118
1975
Kresten, P., Fels, P., Berggren, G.Kimberlitic Zircons- a Possible Aid in Prospecting for KimbeMineralium Deposita., Vol. 10, No. 1, PP. 47-56.Lesotho, Tanzania, South Africa, East AfricaProspecting
DS1975-0323
1976
Lazarenkov, V.G.Alkalic Lamprophyres of the Los Pluton GuineaSoviet Geology And Geophysics, Vol. 17, No. 5, PP. 101-107.Guinea, West AfricaRelated Rocks
DS1975-0123
1975
Lazarenkov, V.G., Loginova, T.I.Dynamic Petrochemistry of Feldspathoidal Syenites in the Los Pluton.Zap. Vses. Min. Obshch., Vol. 104, No. 6, PP. 678-686.Russia, West Africa, GuineaMineral Chemistry, Cretaceous
DS1975-1114
1979
Lelann, F., Ulrich, J.The Vibrocoring Technique and Continental Shelf Survey: The french Geological Survey (brgm)'s Experience.Resources Minerales Sous Marines, Scolari, G. Editor., French Geological Survey (BRGM) No. 7, PP. 217-232.South Africa, Southwest Africa, West Africa, NamibiaDiamond Mining Recovery, Alluvials, Marine Placers
DS1975-1119
1979
Macfarlane, A., Crowe, M.J., Wilkinson, A.F., Arthurs, J.W.The Geology and Mineral Resources of Northern Sierra Leone #2Geological Survey SIERRA LEONE Bulletin., No. 7Sierra Leone, West AfricaGeology, Diamonds
DS1975-0344
1976
Metelkina, M.P.Associations of Precambrian Diamond Bearing ConglomeratesInternational Geology Review, Vol. 18, No. 10, PP. 1194-1200.West Africa, Guinea, RussiaClassification
DS1975-0365
1976
Morel, S.W.The Geology and Minerals of Sierra LeoneUniversity SIERRA LEONE FOURAH BAY COLL. BOOKSHOP, 18P.Sierra Leone, West AfricaDiamonds, Mineral Occurrences
DS1975-1163
1979
Morel, S.W.The Geology and Mineral Resources of Sierra Leone (1979 in EgEconomic Geology, Vol. 74, No. 7, PP. 1563-1576.Sierra Leone, West AfricaKimberlite, Diamonds, Locations, History
DS1975-1169
1979
Nyambok, I.O., Ahrens, L.H.Geochemistry of the Carbonatite Complexes in East AfricaPhysics and Chemistry of the Earth., Vol. 11, PP. 533-539.East Africa, UgandaLeucitite, Leucite, Genesis, Related Rocks
DS1975-0590
1977
Ofunguo, A.C.History of Labour on the Mwadui Diamond MineDar Es Salaam: M.a. Thesis, University Dar Es Salaam., 143P.Tanzania, East AfricaPolitics, Mining
DS1975-1192
1979
Rajaraman, S.A Short Note on the William son Diamond Mines, Mwadui, Shinyanga Region, Tanzania.Indian Minerals, Vol. 33, No. 1, P. 52.Tanzania, East AfricaHistory
DS1975-1193
1979
Rajarman, S.A Short Note on the William son Diamond Mine, Mwadui, Shinyanga Region, Tanzania.Indian Minerals, Vol. 33, No. 1, P. 52.Tanzania, East AfricaGeology
DS1975-0391
1976
Reid, A.M., Brown, R.W., Dawson, J.B., Whitfield, G.G., Siebert.Garnet and Pyroxene Composition in Some Diamondiferous Eclogites.Contributions to Mineralogy and Petrology, Vol. 58, PP. 203-220.Tanzania, East AfricaPetrography, Mineral Chemistry
DS1975-0168
1975
Reid, A.M., Donaldson, C., Dawson, J.B., Brown, R.W.The Igwisi Hills Extrusive KimberlitePhysics and Chemistry of the Earth., Vol. 9, PP. 199-218.Tanzania, East AfricaGeology
DS1975-0169
1975
Reid, A.M., Donaldson, C.H., Brown, R.W., Ridley, R.I., Dawson.Mineral Chemistry of Peridotite Xenoliths from the Lashainevolcano, Tanzania.Physics and Chemistry of the Earth., Vol. 9, PP. 525-544.Tanzania, East AfricaMineral Chemistry
DS1975-0170
1975
Rhodes, J.M.Major and Trace Element Chemistry of Peridotite Inclusions from the lashaine Volcano, Tanzania.Physics and Chemistry of the Earth, Vol. 9, PP. 545-550.Tanzania, East AfricaMineral Chemistry
DS1975-0174
1975
Rollinson, H.R.Report on the Geology of Sheet 58, the Nimini Hills and Surrounding Area.Geological Survey SIERRA LEONE., UNPUBL. ReportWest Africa, Sierra LeoneRegional Geology
DS1975-0854
1978
Rollinson, H.R.Zonation of Supracrustal Relics in the Archaean of Sierra Leone, Liberia, Guinea and Ivory Coast.Nature., Vol. 272, No. 5632, PP. 440-442.West Africa, Sierra Leone, Liberia, Guinea, Ivory CoastStructure, Tectonics
DS1975-0176
1975
Rousselier, B.Industrie Miniere du GhanaAccra Ambassade Fr., 7P.Ghana, West AfricaMining Industry
DS1975-0190
1975
Smith, J.V., Dawson, J.B.Chemistry of Ti Poor Spinels, Ilmenites and Rutiles from Peridotite and Eclogite Xenoliths.Physics and Chemistry of the Earth., Vol. 9, PP. 309-322.Tanzania, South Africa, East AfricaMineral Chemistry
DS1975-0194
1975
Stracke, K.J.Sierra Leone: a Reappraisal of the Remaining Diamond Potential.Selection Trust Internal Report., MELBOURNE, 59P.Sierra Leone, West AfricaGeology, Production, Occurrences
DS1975-0880
1978
Sykes, L.R.Intraplate Seismicity, Reactivation of Preexisting Zones Ofweakness, Alkaline Magmatism and Other Tectonism Postdatingcontinental Fragmentation.Rev. Geophysics Space Physics, Vol. 16, No. 4, NOVEMBER PP. 621-688.United States, West Africa, Brazil, AfricaGeotectonics, Geophysics
DS1975-1243
1979
Tixeront, M.French Activities in the Exploration for Placers on Continental Shelves.Resources Minerales Sous Marines, Scolari, G. Editor., French Geological Survey (BRGM) No. 7, PP. 167-184.South Africa, Southwest Africa, West Africa, NamibiaDiamond Mining Recovery, Alluvials, Marine Placers
DS1975-1246
1979
Tsai, H.M., Meyer, H.O.A., Moreau, J., Milledge, H.J.Mineral Inclusions in Diamond: Premier, Jagersfontein and Finsch Kimberlites, South Africa and William son Mine, Tanzania.Proceedings of Second International Kimberlite Conference, Proceedings Vol. 1, PP. 16-26.Tanzania, East AfricaMineralogy
DS1975-0894
1978
Williams, H.R.The Archean Geology of Sierra LeonePrecambrian Research., Vol. 6, PP. 251-268.Sierra Leone, West AfricaGeology
DS1975-1263
1979
Williams, H.R.An Archean Suture in Sierra Leone?Nature., Vol. 282, Dec. 6TH., P.Sierra Leone, West AfricaGeology, Tectonics
DS1975-0209
1975
Williams, H.R., Williams, R.A.The Geology of the Yengema Lease, Kono District, Sierra LeonInternational Report NATIONAL DIAMOND MINING CO. LTD., 21P.Sierra Leone, West AfricaGeology, Diamonds
DS1975-0435
1976
Williams, H.R., Williams, R.A.The Kasila Group , Sierra Leone, an Interpretation of New DaPrecambrian Research., Vol. 3, PP. 505-508.Sierra Leone, West AfricaRelated Rocks
DS1975-0651
1977
Williams, H.R., Williams, R.A.Kimberlites and Plate Tectonics in West AfricaNature., Vol. 270, No. 5637, PP. 507-508.Sierra Leone, West Africa, Guinea, Liberia, Ivory Coast, GhanaGeology, Genesis, Kimberlite
DS1980-0004
1980
AgidProspects for Production Cooperation Between India and GhanaA.g.i.d. News, No. 24, JULY, PP. 30-31.India, Ghana, West AfricaDiamond Production
DS1980-0006
1980
Allen, P.M.Discussion of the Paper by Culver and Williams Entitled Late Precambrian and Phanerozoic Geology of Sierra Leone.Geological Society of London Journal, Vol. 137, PP. 511-512.Sierra Leone, West AfricaGeology, Related Rocks
DM1980-0360
1980
Anon.Angola's Diamond Production RisingFinancial Times, Dec. 23RD.Angola, West AfricaProduction
DM1980-0385
1980
Anon.Sierra Leone... Feasibility Study of Kono AreaWorld Mining, Vol. 33, No. 8, P. 79.Sierra Leone, West AfricaGeology, Diamonds
DS1980-0029
1980
Anon.Charles Anthony Diamond IncorporatedEngineering and Mining Journal, Vol. 180, No. 6, P. 268.Guinea, West AfricaDiamond Production
DS1980-0056
1980
Beckinsale, R.D., Gale, N.H., Parkhurst, R.J., Macfarlane, A.C.Discordant Rubidium-strontium and Lead Whole Rock Isochron Ages for ThePrecambrian Research., Vol. 13, No. 1, PP. 43-62.Sierra Leone, West AfricaGeochronology, Geology
DS1980-0064
1980
Black, R.Precambrian of West AfricaEpisodes, Vol. 1980, No. 4, PP. 3-8.West Africa, Ivory Coast, Guinea, Sierra Leone, Liberia, NigeriaStructure, Tectonics
DS1980-0071
1980
Boyd, F.R., Danchin, R.V.Lherzolites, Eclogites and Megacrysts from Some Kimberlites of Angola.American Journal of Science (JACKSON MEMORIAL VOLUME), PP. 528-549.Angola, West AfricaPetrology
DS1980-0105
1980
Deboorder, H.Deep Reaching Fracture Zones in the Crystalline Basement Surrounding the West Congo System and Their Control of Mineralization in Angola and Gabon. #1Proceedings of the 26th International Geological Congress HELD French Geological Survey (BRGM), Proceedings Vol. 2, P. 713. (abstract.)Angola, Gabon, West AfricaTectonics
DS1980-0164
1980
Hastings, D.A.On the Tectonics and Metallogenesis of West Africa. a Model influenced by New Geophysical Data.Proceedings of the 26th International Geological Congress, P. 726. (abstract.).West Africa, GuineaStructure, Tectonics
DS1980-0254
1980
Nilsen, O.A Bibliography of the Mineral Resources of TanzaniaUppsala: Scand. Institute Afr. Studies, 92P.Tanzania, East AfricaDiamond, Kimberlite
DS1980-0281
1980
Pike, J.E.N., Meyer, H.O.A., Wilshire, H.G.Petrography and Chemical Composition of a Suite of Ultramafic Xenoliths from Lashaine Tanzania.Journal of GEOLOGY, Vol. 88, No. 3, PP. 343-352.Tanzania, East AfricaPetrography
DS1980-0288
1980
Reis, B., Ires de barros.Sur Quelques Kimberlites de L'angolaProceedings of the 26th International Geological Congress, Proceedings Vol. 3, P. 996. (abstract.)Angola, West AfricaGeology
DS1980-0340
1980
Villeneuve, M.Schema Geologique du Nord de la GuineeBulletin. SOC. GEOL. FRAN., SUPPL. French Geological Survey (BRGM) F 15, Vol. 22, No. 2, PP. 54-57.West Africa, GuineaProterozoic, Orogeny, Structure, Tectonics, Hercynien, Caledonia
DM1981-0445
1981
Anon.Angolan Diamond OutputThe Mining Journal, Vol. 296, No. 7585, P. 9.Angola, West AfricaProduction
DM1981-0471
1981
Anon.Credit for Central African Republic Diamond StudyThe Mining Journal, Vol. 296, No. 7609, P. 480.Central African Republic, West AfricaGeology, Prospecting
DM1981-0476
1981
Anon.More Diamonds: News from Guinea, West AfricaMining Magazine., Vol. 145, No. 3, P. 155.Guinea, West AfricaInvestment
DS1981-0035
1981
Anon.Guinea: Mineral Wealth Entices Western InvestorsAfrican Economic Digest., JULY 3RD., P. 14.Guinea, West AfricaDiamonds
DS1981-0036
1981
Anon.Guinee: Uranium....Industries Et Travaux D'outre Mer., Vol. 29, No. 333, P. 473.Guinea, West AfricaInvestment
DS1981-0037
1981
Anon.Guinea: First Diamond Mine Aims to Be Operational in 1983Engineering and Mining Journal, Vol. 181, No. 10, P. 80.Guinea, West AfricaMining
DS1981-0062
1981
Anon.Report on Mineral Research and Development in Upper VoltaProceedings of The 1st. Regional Conference On Development A, PP. 119-122.West Africa, Upper VoltaDiamond
DS1981-0080
1981
Bell, K., Dodson, M.H.The Geochronology of the Tanzanian ShieldJournal of GEOLOGY, Vol. 89, PP. 109-128.Tanzania, East Africa, Kenya, UgandaCraton, Age Dating, Isotope
DS1981-0101
1981
Briden, J.C., Whitcombe, D.N., Stuart, G.W., Fairhead, J.D.Depth of Geological Contact Across the West African Craton Margin.Nature., Vol. 292, JULY 9TH., PP. 123-128.West Africa, Senegal, GuineaTectonics
DS1981-0196
1981
Guetat, Z.Etude Gravimetrique de la Bordure Occidentale du Craton Ouest Africain.Montpellier: University Des Sciences Et Tech. Du Languedoc., West Africa, GuineaGravity, Geophysics, Tectonics
DM1981-0495
1981
Jewellers Circular KeystoneGhana Mine Likely to CloseJewellers Circular Keystone, SEPT. P. 83.West Africa, GhanaBlank
DM1981-0496
1981
Jewellers Circular KeystoneNew Diamond Mining Venture Files With Sec to Raise FundsJewellers Circular Keystone, DECEMBER P. 38.West Africa, Guinea, South Africa, VenezuelaBlank
DS1981-0225
1981
Jones, G.K.The Industrial Minerals of TanzaniaIndustrial Minerals, No. 166, JULY PP. 23-39.Tanzania, East AfricaDiamonds
DS1981-0229
1981
Kamara, A.Y.S.Review: Geophysical Methods for Kimberlite ProspectingAust. Society of Exploration Geophysics Bulletin., Vol. 12, No. 3, PP. 43-51.Sierra Leone, South Africa, Russia, Canada, United States, Lesotho, West AfricaKimberlite, Geophysics
DS1981-0276
1981
Macfarlane, A., Crow, M.J., Arthurs, J.W., Wilkinson, A.F., Auco.The Geology and Mineral Resources of Northern Sierra Leone #3Institute GEOL. SCIENCES OVERSEAS MEMOIR., MEMOIR No. 7, 103P. DIAMONDS PP. 65-66.Sierra Leone, West AfricaKimberley, Geology, Diamond
DM1981-0514
1981
Marston, K.Bridge Oil Gem Mine in Guinea to Bypass CsoFinancial Times, No. 28535, P. 22.Guinea, West AfricaInvestment
DS1981-0289
1981
Mccallister, R.H., Gordon, L.N.Subcalcic Diopsides from Kimberlites: Chemistry, Exsolutionmicrostructures, and Thermal History.Contributions to Mineralogy and Petrology, Vol. 78, PP. 118-125.South Africa, Botswana, Tanzania, East Africa, LesothoMicroprobe Analyses, Genesis, Kimberlite
DS1981-0291
1981
Mccallister, R.H., Nord, G.L.JR.Subcalcic Diopsides Fromm Kimberlites: Chemistry, Exsolution Microstructures and Thermal History.Contributions to Mineralogy and Petrology, Vol. 78, PP. 118-125.Lesotho, South Africa, Botswana, Tanzania, East AfricaGenesis
DM1981-0527
1981
Milling-Stanley, G.Once upon a Time in West Africa.Financial Times, MAY 9TH. 1P.West Africa, Central Africa, Ghana, ZaireAkwatia Mine, Production, Politics, History
DM1981-0528
1981
Milling-Stanley, G.A Chink in de Beers ArmourFinancial Times, MAY 6TH.West Africa, Democratic Republic of CongoCso
DM1981-0529
1981
Milling-Stanley, G.Ghana Diamond Mine May CloseFinancial Times, MAY 5TH.West Africa, GhanaMining
DM1981-0530
1981
Milling-Stanley, G.Once Upon a Time in West AfricaFinancial Times, JUNE 6TH.West Africa, Ghana, Democratic Republic of CongoCso, Production
DS1981-0301
1981
Mitchell, A.H.G., Garson, M.S.Mineral Deposits and their Global Tectonic SettingAcademic Press, 405P. DIAMONDS SEE PAGING LISTS IN CONT.South Africa, Russia, Yakutia, East Africa, Angola, Australia, BrazilClassification, Distribution, Origin, Genesis, Placers, Pipes
DS1981-0368
1981
Schmetzer, K., Bank, H.Garnets from Umba Valley, Tanzania- Members of the Solid Solution Series Pyrope-spessartine.Neues Jahrbuch f?r Mineralogie MONATS., No. 8, PP. 349-354.Tanzania, East AfricaBlank
DS1981-0410
1981
Tompkins, L.A., Haggerty, S.E.The Koidu Kimberlite, Sierra Leone: Preliminary Analytical Results.National Diamond Mining Company Sierra Leone., 28P. UNPUBL. SEPTEMBER.West Africa, Sierra LeoneChemical, Analyses, Mineral Chemistry, Ilmenite, Chlorite, Eclogite
DS1981-0420
1981
Villeneuve, M.Resultats Preliminaires D'une Etude Geologique au Sud du Fouta Djalon.Comptes Rendus Somm. Seances Soc. Geol. Afrique., No. 2, PP. 55-59.West Africa, GuineaStructure, Tectonics, Basement, Petrology
DM1982-0705
1982
Anon.Diamonds- ZaireDiamond News And South African Jeweller., Vol. 45, No. 3, DECEMBER P. 37.East Africa, ZaireMiba, Production Figures, Sozacom, Cso, Mbuji-mayi
DM1982-0713
1982
Anon.3 Manitowoc 4600 Draglines to Mine DiamondsThe Mining Journal, Vol. 299, No. 7668, P. 100.Guinea, West AfricaMining, Kimberlite
DM1982-0716
1982
Anon.Sierra Leone Kimberlite ProgressMining Magazine (London), Vol. 147, No. 2, P. 85.Sierra Leone, West AfricaCurrent Activities
DM1982-0717
1982
Anon.Sierra Leone... the National Diamond Mining Company Is to Proceed with the Kono Diamond Project.World Mining, Vol. 35, No. 10, P. 150.Sierra Leone, West AfricaCurrent Activities
DM1982-0727
1982
Anon.Diamonds-sierra LeoneDiamond News And South African Jeweller., Vol. 45, No. 3, DECEMBER P. 35.West Africa, Sierra LeoneDiminco, Kono, Diamonds Notable
DS1982-0065
1982
Anon.Guinea Eyes Western Capital for Development ProjectsEngineering and Mining Journal, Vol. 183, No. 8, P. 37; P. 41.West Africa, GuineaInvestment
DS1982-0066
1982
Anon.Bridge Oil Has Signed a $ 45 Million Financial Agreement For the Development and Exploration of Gold and Diamond Deposits in Guinea, West Africa.Mirror Newspaper., Dec. 6TH.West Africa, GuineaBlank
DS1982-0084
1982
Balfour, I.The 'William son Pink' DiamondIndiaqua., No. 33, PP. 125-128.Tanzania, East AfricaBlank
DS1982-0170
1982
Dawson, J.B., Smith, J.V.Upper Mantle Amphiboles: a ReviewMineralogical Magazine., Vol.45, PP. 35-46.South Africa, Tanzania, East AfricaGeochemistry, Texture, Lherzolite, Pargasite
DS1982-0171
1982
Dawson, J.B., Smith, J.V.Coarse and Veined Peridotites from Northern Tanzania Tuff ConesProceedings of Third International Kimberlite Conference, TERRA, Vol. 2, No. 3, P. 230, (abstract.).Tanzania, East AfricaKimberlite, Lherzolite, Harzburgite, Wehrlite, Mineralogy
DS1982-0241
1982
Haggerty, S.E.The Mineralogy of Global Magnetic Anomalies #1National Technical Information Service NASA CR 169507, 47P.West AfricaMagsat, Geophysics, Gondwanaland
DS1982-0242
1982
Haggerty, S.E., Toft, P.B.Magsat: Geological and Gravity Correlations in Northern South America and West Africa.Eos, Vol. 63, No. 45, Nov. 9TH., P. 909, (abstract.).South America, West AfricaGeophysics
DS1982-0243
1982
Haggerty, S.E., Tompkins, L.A.Opaque Mineralogy and Chemistry of Ilmenite Nodules in West africa Kimberlites: Subsolidus Equilibrium and Controls on Crystallization Trends.Proceedings of Third International Kimberlite Conference, TERRA COGNITA, ABSTRACT VOLUME., Vol. 2, No. 3, PP. 224-225, (abstract.).West Africa, Liberia, Sierra Leone, Mali, GuineaKimberlite, Heavy Minerals, Sampling
DS1982-0258
1982
Hastings, D.A.An Investigation of Magsat and Complementary Dat a Emphasizing Precambrian Shields and Adjacent Areas of West Africa And south America. #2National Technical Information Service, NASA CR-169838, E83-10184, 6P.West Africa, Brazil, Argentina, Guyana, South America, GuineaMagsat, Tectonics, Structure
DS1982-0259
1982
Hastings, D.A.On the Tectonics and Metallogenesis of West Africa: a Model incorporating New Geophysical Data.Geoexploration., Vol. 20, No. 3-4, PP. 295-327.West Africa, Ghana, Upper Volta, Mali, Guinea, Liberia, Sierra LeoneDiamond, Kimberlite, Tectonic, Geophysics
DS1982-0260
1982
Hastings, D.A.An Investigation of Magsat and Complementary Dat a Emphasizing Precambrian Shields and Adjacent Areas of West Africa And south America. #1National Technical Information Service, NASA CR 169607, 4P.West Africa, South Africa, GuineaGeophysics
DS1982-0282
1982
Hubbard, F.H., Mcgill, R.J.A Pectolite Sedimentary Xenolith from Kimberlite, Sierra LeoneMineralogical Magazine., Vol. 46, No. 341, PP. 501-503.Sierra Leone, West AfricaBlank
DS1982-0295
1982
Jain, B.K., Regan, R.D.Integration of Satellite and Conventional Geophysical Dat a with tectonics and Structural Information Over the African Continent.Geoexploration., Vol. 20, No. 3-4, PP. 233-258.Africa, West Africa, Central Africa, East Africa, Southwest AfricaStructure, Tectonics, Remote Sensing
DM1982-0743
1982
Jewellers Circular KeystoneGuinea Gets Loan to Dig DiamondsJewellers Circular Keystone., DECEMBER P. "B"West Africa, GuineaBlank
DS1982-0301
1982
Jones, A.P., Dawson, J.B., Smith, J.V.Peridotites from the Olmani Scoria Cone, Northern TanzaniaProceedings of Third International Kimberlite Conference, TERRA COGNITA, ABSTRACT VOLUME., Vol. 2, No. 3, P. 221, (abstract.).Tanzania, East AfricaKimberlite, Dunite, Harzburgite, Lherzolite, Wehrlite
DS1982-0306
1982
Jones, R.N.Alluvial Diamond Mining Operation by Sierra Leone Selection trust Ltd.Camborne: Camborne School of Mines, Report Submitted For Min, Jan. 20TH. 38P.Sierra Leone, West AfricaAlluvial Diamond Placers, Mining Engineering, Plant, Equipment
DS1982-0341
1982
Knoche, G.Angola. #2Bundes. Geowissensch. Rohstoffe, Hanover., 89P.Angola, West AfricaDiamond, Production, Mineral Resources
DM1982-0748
1982
Kraar, L.Maurice Tempelsman's African ConnectionsFortune., Vol. 106, No. 10, PP. 130-141.Democratic Republic of Congo, Sierra Leone, West Africa, Central Africa, Central African RepublicHistory, Diamond, Brokerage, Markets, Cutting
DS1982-0362
1982
Latou, A.Les Gisements de Diamant de la Republique Centraafricaine Dans Leur Contexte Geologique de l'afrique Centrale: Cas Particulier de N'zako.Ph.d. Thesis, University Paris, 114P.West Africa, Central African RepublicOrigin, Diamonds
DS1982-0369
1982
Lesquer, A., Louis, P.Anomalies Grammetrique et Collision Continentale au Precambrian.Geoexploration., Vol. 20, No. 3-4, PP. 275-293.West Africa, Mali, GuineaStructure, Tectonics
DM1982-0769
1982
Marston, K.Guinea Diamond and Gold Development Credit Deal AgreedFinancial Times, No. 28912, P. 4.Guinea, West AfricaFinancing, Investment
DM1982-0770
1982
Marston, K.Guinea Diamond Venture Due to Start in 1984Financial Times, No. 28826, P. 23.Guinea, West AfricaInvestment
DS1982-0438
1982
Milanovskiy, YE.YE., Malkov, B.A.Epochs of Kimberlite Volcanism and Global Compressive and Expansionary Cycles of the Earth.Doklady Academy of Science USSR, Earth Science Section., Vol. 252, No. 5, PP. 62-65.Russia, Global, United States, Colorado, Wyoming, South Africa, Canada, West AfricaTectonics, Structure, Geochronology
DS1982-0449
1982
Morogan, V.Fenitization and Ultimate Rheomorphism of Xenoliths from The Oldoinyo Lengai Carbonatitic Volcano, Tanzania.Msc. Thesis, Mcgill University, Tanzania, East AfricaPetrography
DS1982-0454
1982
Nash, W.P., Brown, F.H.Alkaline Lavas and Ultramafic Xenoliths from Marsabit, Eastafrica.Geological Society of America (GSA), Vol. 14, No. 7, P. 574, (abstract.).East Africa, KenyaKimberlite, Lherzolite, Wehrlite
DS1982-0503
1982
Ponsard, J.F., Lesquer, A., Villeneuve, M.Une Suture Panafricaine sur la Bordure Occidentale du Craton Ouest Africain.Comptes Rendus Seances Academy of Science Ser. 2, Mec. Phys. Chim. S, Vol. 295, No. 13, PP. 1161-1164.West Africa, Guinea, Sierra Leone, Mali, GermanyTectonics
DS1982-0589
1982
Sutherland, D.G.The Transport and Sorting of Diamonds by Fluvial and Marineprocesses.Economic Geology, Vol. 77, No. 7, PP. 1613-1620.Democratic Republic of Congo, Angola, Sierra Leone, West Africa, East AfricaSize, Quality, Exploration
DS1982-0600
1982
Thompson, J.Guinea Venture to Bypass de BeersJewellers Circular Keystone, Oct. PP. 5-6.West Africa, GuineaBlank
DS1982-0603
1982
Tompkins, L.A., Haggerty, S.E.Unique Kimberlitic Chlorites from Sierra LeoneGeological Society of America (GSA), Vol. 14, No. 7, P. 632, (abstract.).Sierra Leone, West AfricaKimberlite, Petrography
DS1982-0604
1982
Tompkins, L.A., Haggerty, S.E.The Koidu Kimberlite Complex, Sierra LeoneProceedings of Third International Kimberlite Conference, TERRA COGNITA, ABSTRACT VOLUME., Vol. 2, No. 3, P. 210, (abstract.).Sierra Leone, West AfricaKimberlite, Yengema, Pipe, Dike, Petrology, Mineralogy, Texture
DS1982-0607
1982
Trofimov, V.S.New Dat a on the Formation of Diamonds in Kimberlites of The upper Strat a of the Earth's Crust.International Geology Review, Vol. 24, No. 8, PP. 920-924.Russia, South Africa, Ivory Coast, West AfricaDepth, Genesis, Crustal Origin
DS1982-0620
1982
Villeneuve, M.Schema Lithostratigraphique des Mauritanides au Sud du Senegal et au Nord de la Guinee D'apres Les Donnees Actuelles.Geological Society FR. Bulletin., Vol. 24, No. 2, PP. 249-254.West Africa, Guinea, SenegalTectonic, Structure, Orogeny, Caledonian, Hercynien
DS1982-0643
1982
Woodzick, T.L., Mccallum, M.E.A Teledetective Study of Kimberlite Regions in North America ( Colorado-wyoming),east Africa ( Mwadui ),and Siberia (mir). #1Proceedings of Third International Kimberlite Conference, TERRA COGNITA, ABSTRACT VOLUME., Vol. 2, No. 3, P. 203, (abstract.).United States, Colorado, Wyoming, East Africa, Russia, Tanzania, Rocky MountainsKimberlite, Geophysics, Remote Sensing
DS1982-0657
1982
Zinchuk, N.N.Mineral Composition of Kelyphytic Rims on Garnets from Kimberlites.International Geology Review, Vol. 24, No. 3, PP. 354-358.Russia, Guinea, West AfricaMalo-botuoba, Alteration, Petrography, Pyrope, Garnet, Liberian
DM1983-0719
1983
Anon.Small Diamond Mines Doing WellThe Times, Nov. 1ST.Australia, Western Australia, West Africa, GuineaCurrent Activities, Investment
DM1983-0722
1983
Anon.Sibeka- Extracts from the Report of the Board of DirectorsThe Mining Journal, Vol. 301, No. 7718, JULY 22ND. P. 70.Brazil, Angola, West AfricaProduction, Investment, Annual Report
DM1983-0770
1983
Anon.Diamond Project on Schedule. #2The Mining Journal, Vol. 301, No. 7740, Dec. 23RD. PP. 451-452.Guinea, West AfricaAlluvial, Diamond, Investment
DM1983-0771
1983
Anon.Work Continues on Aredor Diamond ProjectThe Mining Journal, Vol. 300, No. 7714, JUNE 24TH. P. 431.Guinea, West AfricaMining, Plant
DM1983-0782
1983
Anon.Rio Tinto Looks at MafikengDiamond News And South African Jeweller., No. 1983/ 1, P. 47.South Africa, BophuthatswanaAlluvial Diamond Placers
DM1983-0783
1983
Anon.Rio Tinto South Africa Opens Diamond MineCape Times, SEPTEMBER 17TH.South Africa, BophuthatswanaAlluvial Placer Deposits, Current Actvities, Mining Engineering
DM1983-0784
1983
Anon.Rio Tinto Open Bophuthatswana Diamond MineDiamond News And South African Jeweller., Vol. 47, No. 2, P. 43.South Africa, BophuthatswanaMining, History
DM1983-0785
1983
Anon.Diamond Leases for RtzThe Mining Journal, Vol. 301, No. 7726, SEPT. 16TH. P. 207.South Africa, BophuthatswanaMolopo River, Alluvial Diamond Placers, Current Activities
DM1983-0804
1983
Anon.Smuggling Rife in CarDiamond News And South African Jeweller., 1983/6, JUNE P. 18.West Africa, Central African RepublicSmuggling, Idb
DM1983-0805
1983
Anon.Gemstone Dealers Face African ProblemsDiamond News And South African Jeweller., Vol. 46, No. 10, JULY P. 31.West Africa, East Africa, South Africa, Central AfricaBuyer, Politics
DM1983-0806
1983
Anon.Bridge Startes $ 45 M Gem MineDiamond News And South African Jeweller., No. 1983, 1, P. 53.West Africa, GuineaDiamond, Mining, Financing
DM1983-0807
1983
Anon.Aredor Mine in Guinea to Yield Diamonds SoonAustralian Financial Review., Dec. 30TH. 1P.West Africa, GuineaProspecting, Mineral Economics, Investment
DM1983-0808
1983
Anon.International Finance Corp. Approved Loan to Bridge Oil Ltd's Diamond Project.....The Miner Newspaper., Feb. 28-MARCH 13, P. 31.West Africa, GuineaBlank
DM1983-0809
1983
Anon.Output from Sierra LeoneDiamond News And South African Jeweller., Vol. 47, No. 2, P. 35.West Africa, Sierra LeoneProduction Figures
DS1983-0041
1983
Anon.St. Joe Mineral Corporation Has Outlined Alluvial Gravel....Industrial Minerals, No. 188, P. 61.Brazil, Sierra Leone, West AfricaDiamonds, Alluvial, Rio Araguaia, Kono, Mining
DS1983-0046
1983
Anon.Central African Republic- Prospecting and DiamondsMining Annual Review For 1982, P. 411.Central African Republic, West AfricaProduction
DS1983-0072
1983
Anon.Guinea Diamond Venture Has Finance- Will MineIndiaqua., No. 34, 1983/1, P. 35 ; P. 37.Guinea, West AfricaHistory, Mining
DS1983-0075
1983
Anon.Sierra Leone- DiamondsMining Annual Review For 1982, PP. 423-424.Sierra Leone, West AfricaDiamond, Prospecting
DS1983-0076
1983
Anon.Press Releases: Bp Subsidiary Signs Sierra Leone Diamond Mining Agreement.News Services Circular Nos. 261832; 261834., 1P.Sierra Leone, West AfricaMining Engineering, Mineral Economics, Investment
DS1983-0085
1983
Anon.Rio Tinto Unit Test MinesBp News Circulation From Reuters, SEPTEMBER 13TH.South Africa, BophuthatswanaAlluvial Placer Deposits, Diamond
DS1983-0086
1983
Anon.Diamonds from MafikengIndustrial Minerals, No. 195, DECEMBER P. 13.South Africa, BophuthatswanaRio Tinto, Alluvial, Placer, Prospecting
DS1983-0087
1983
Anon.South Africa: Test Diamond Mining by RtzIndustrial Minerals, No. 193, OCTOBER P. 11.South Africa, BophuthatswanaSampling
DS1983-0092
1983
Anon.Tanzania- DiamondsMining Annual Review For 1982, P. 408.Tanzania, East AfricaMpanda, Lake Victoria, Prospecting
DS1983-0101
1983
Anon.Exploitation D'une Mine de Diamant En GuineeIndust. Trav., Vol. 31, No. 351, P. 77.West Africa, GuineaInvestment
DS1983-0102
1983
Anon.How Bridge Pulled It Off. Australia's Project Financing Role in an African Diamond Venture Provides a Learning Curve For Ashton Lenders.Australian Business, Jan. 27TH. ( 2P.)West Africa, GuineaBlank
DS1983-0103
1983
Anon.Sierra Leone Diamond Industry in DisarrayBp Minerals Ltd. News Service Clipping, Nov. 28TH. 1P.West Africa, Sierra LeoneInvestment, Mineral Economics, Politics
DS1983-0104
1983
Anon.Upper Volta Needs Infrastructure for Mineral DevelopmentEngineering and Mining Journal, Vol. 184, No. 4, P. 35.West Africa, Upper VoltaBarsalogo, Zabre-gog, Diamonds
DS1983-0122
1983
Barongo, J.O.Geophysical Investigations for Kimberlitic Pipes in the Greenstone Belt of Western Kenya.Journal of AFR. EARTH SCIENCES, Vol. 1, No. 3/4, PP. 235-253.East Africa, KenyaGeophysics, Kimberlites
DM1983-0827
1983
Comfort, N.Britons at Diamond Mines in Peril from Guerrilla AttackesDaily Telegraph, JULY 20TH.Angola, West AfricaPolitics
DM1983-0833
1983
Dowden, R.The Dirt on the Face of the DiamondThe Times, OCTOBER 14TH. 3P. CONDENSED.East Africa, Angola, ZairePolitics, Idb, Trade
DS1983-0214
1983
Eisenburger, D., Hannak, W., Haut, R., Knabe, W., Levin, P., MullCircular Magnetic Structures in Upper Volta and Their Geological Significance for Prospecting.Journal of AFRICAN EARTH SCI., Vol. 1, No. 3-4, P. 358. (abstract.).West Africa, Upper VoltaGeotectonics
DS1983-0221
1983
Fabre, J.Afrique de L'ouestPergamon Press, 426P.West AfricaTectonics, Structural Geology, Craton
DS1983-0260
1983
Graff, L.Graff Offers 70 Carat HeartJewellers Circular Keystone, Vol. 154, No. 10, OCTOBER P. D.West AfricaDiamonds Notable
DS1983-0272
1983
Haggerty, S.E.Oxide Silicate Reactions in Lower Crustal Granulites from Liberia, West Africa.Geological Society of America (GSA), Vol. 15, No. 6, P. 589. (abstract.).West Africa, LiberiaKimberlite, Genesis, Freudenbergite, Garnets, Metasomatism
DS1983-0276
1983
Haggerty, S.E., Tompkins, L.A.Subsoildus Reactions in Kimberlitic Ilmenites: Exsolutions, reduction and the Redox State of the Mantle- Appendix.Annales Scientifiques De L' Universite De Clermont-ferrand Ii, No. 74, PP. 141-148.West Africa, Liberia, Sierra Leone, Russia, South AfricaAnalyses
DS1983-0277
1983
Haggerty, S.E., Tompkins, L.A.Redox State of Earth's Upper Mantle from Kimberlite IlmeniteNature., Vol. 303, No. 5915, PP. 295-300.West Africa, Liberia, United StatesMineral Chemistry
DM1983-0847
1983
Hall, R.Angola Regime Threatened by Diamond AffairThe Observer., JULY 24TH.Angola, West AfricaPolitics, Scandal
DS1983-0298
1983
Hay, R.L., O'neil, J.R.Carbonatite Tuffs in the Laetoli Beds of Tanzania and the Kaiserstuhl in Germany.Contributions to Mineralogy and Petrology, Vol. 82, No. 4, PP. 403-406.Tanzania, East AfricaRelated Rocks
DS1983-0316
1983
Hubbard, F.H.The Phanerozoic Cover Sequences Preserved As Xenoliths in The Kimberlite of Eastern Sierra Leone.Geology Magazine., Vol. 120, No. 1, PP. 67-71.Sierra Leone, West AfricaXenoliths, Koidu, West African Craton, Leo Uplift, Stratigraphy
DM1983-0855
1983
Jewellers Circular KeystoneHow an Australian Oil Company Raised Cash for a Guinea Diamond Venture.Jewellers Circular Keystone., APRI, P. 52; P. 54; P. 58; P. 60.West Africa, GuineaBridge Oil, News Item
DS1983-0333
1983
Jones, A.P., Smith, J.V., Dawson, J.B.Glasses in Mantle Xenoliths from Olmani, TanzaniaJournal of GEOLOGY, Vol. 91, No. 2, PP. 167-178.Tanzania, East AfricaPetrology
DS1983-0334
1983
Jones, A.P., Smith, J.V., Dawson, J.B., Hansen, E.C.Metamorphism, Partial Melting, and K-metasomatism of Garnets capolite-kyanite Granulite Xenoliths from Lashaine, Tanzania.Journal of GEOLOGY, Vol. 91, No. 2, PP. 143- 166.Tanzania, East AfricaBlank
DM1983-0859
1983
Kennedy, R.World Bank Lends Bridge Diamond Venture $ 15.6mAustralian Financial Review., Jan. 10TH.West Africa, GuineaBlank
DS1983-0407
1983
Liegeois, J.P., et al.Permian Alkaline Undersaturated and Carbonatite Province And Rifting Along the West African Craton.Nature., Vol. 305, No. 5929, SEPT. 1, P. 42.West Africa, GuineaStructure, Tectonics
DS1983-0437
1983
Mayman, J.Diamonds in Guinea- First Stage Finances Take ShapeIndustrial Minerals, No. 187, APRIL, P. 53.Guinea, West AfricaFinance, Production
DS1983-0470
1983
Mortimer, J.A Hunch Led to the Biggest Pipe of AllJohannesburg Star., JULY 20TH. P. 3Tanzania, East AfricaHistory
DS1983-0522
1983
Pouclet, A., Menot, R.P., Piboule, M.Le magmatism Alaclin Potassique de L'aire Volcanique des ViBulletin. MINERALOGIQUE., Vol. 106, PP. 607-622.East AfricaRift, Melilite, Leucite, Related Rocks
DC1983-0967
1983
Rio Tinto South Africa LtdTest Mining at Mafikeng DiamondsRio Tinto Zinc Corp. Press Release From Johannesburg, SEPT. 14TH. 1P.South Africa, BophuthatswanaAlluvial Placer Deposits, Current Activities, Mining Engineering
DS1983-0601
1983
Tompkins, L.A.The Koidu Kimberlite Complex Sierra Leone, West AfricaMsc. Thesis, University Massachusetts, 230P.West Africa, Sierra LeoneMineral Chemistry, Chlorite, Kimberlite Mineralogy, Petrology
DS1983-0602
1983
Tompkins, L.A., Haggerty, S.E.The Koidu Kimberlite Complex, Sierra Leone: Geological Setting, Petrology and Mineral Chemistry- Appendix.Annales Scientifiques De L' Universite De Clermont-ferrand Ii, No. 74, PP. 99-122.West Africa, Sierra LeoneAnalyses, Mineral Chemistry
DS1983-0603
1983
Tompkins, L.A., Hargraves, R.B., Haggerty, S.E.Magnetic Mineralogy and Palaeomagnetism of the Koidu Kimberlite Complex Sierra Leone, West Africa.Eos, Vol. 64, No. 18, PP. 216-217. (abstract.).West Africa, Sierra LeoneMineral Chemistry
DS1983-0610
1983
Tyerman, R.Rich Pickings Await Guinea Gem HuntersSunday Telegraph, Dec. 11TH.West Africa, GuineaHistory, Investment, Mineral Economics
DS1983-0626
1983
Wahl, W.G.Report on the Placer Diamond Deposits Sierra LeoneWahlex Limited, Report Submitted., 16P. UNPUBL.West Africa, Sierra Leone, YengemaGeology, Geomorphology, Genesis
DS1983-0647
1983
Zezulka, J.Precious Stones of the United Republic of TanzaniaGeol. Pruzkum., No. 4, PP. 113-116.East Africa, TanzaniaGemstones, Diamond
DM1984-0842
1984
Anon.Ghana - Time for Action. New Lease for DiamondsLondon Mining Journal, Vol. 303, No. 7789, Nov. 30TH. PP. 369-371.Ghana, West AfricaDiamond Production Figures, Birim, Akwatia, Cast
DM1984-0856
1984
Anon.Early StartDiamond News And South African Jeweller., Vol. 47, No. 9, JUNE P. 51.Guinea, West AfricaProduction Plans
DM1984-0883
1984
Anon.Ghana to Produce More DiamondsLondon The Mining Journal, Vol. 303, No. 7778, SEPT. 14TH. P. 186.West Africa, GhanaBlank
DM1984-0884
1984
Anon.Guinea Mine Gets GoingDiamond News And South African Jeweller., Vol. 47, No. 4, JANUARY, P. 41.West Africa, GuineaCso, History
DM1984-0885
1984
Anon.Aredor Diamond Project, Guinea Nears Start UpMining Magazine., Vol. 150, No. 2, PP. 118-119.West Africa, GuineaHistory, Exploration, Current Activities, Mining, Recovery
DM1984-0886
1984
Anon.Guinea Diamond Mine to OpenCape Times, Jan. 16TH.West Africa, GuineaInvestment
DM1984-0887
1984
Anon.Diamonds Aredor UpdateThe Mining Journal, Vol. 302, No. 7744, Jan. 20TH. P. 36.West Africa, GuineaInvestment, Production
DM1984-0888
1984
Anon.Recovering Diamonds at Aredor, GuineaMining Magazine., Vol. 151, No. 4, P. 286.West Africa, GuineaMining Methods
DM1984-0889
1984
Anon.Aredor - Dangling the CaratLondon Mining Journal, Vol. 303, No. 7777, SEPT. 7TH. PP. 160-161.West Africa, GuineaMining Methods, Production Figures
DM1984-0890
1984
Anon.Aredor Start UpThe Mining Journal, Vol. 302, No. 7754, MARCH 30TH. P. 213.West Africa, GuineaProduction
DM1984-0891
1984
Anon.More Diamonds Near AredorMining Magazine., Vol. 151, No. 4, OCTOBER P. 292.West Africa, GuineaProspecting
DM1984-0892
1984
Anon.Aredor Project ExpandsLondon Mining Journal, Vol. 303, No. 7760, AUG. 31ST. P. 150.West Africa, GuineaBlank
DM1984-0893
1984
Anon.Aredor -dangling the CaratLondon Mining Journal, Vol. 303, No. 7777, SEPT. 7TH. PP. 160-161.West Africa, GuineaBlank
DM1984-0894
1984
Anon.Changes in Sierra LeoneLondon Mining Journal, Vol. 303, No. 7784, Oct. 26TH. P. 298.West Africa, Sierra LeoneBp, Investment
DM1984-0895
1984
Anon.Sierra Leone Acquires Bp DiamondsMining Magazine., Vol. 151, No. 6, DECEMBER P. 563.West Africa, Sierra LeoneCorporate Affairs
DM1984-0896
1984
Anon.Sierra Leone Mineral OutputLondon The Mining Journal, Vol. 303, No. 7768, JULY 6TH. P. 11.West Africa, Sierra LeoneProduction, Diamond
DS1984-0076
1984
Anon.Diamond Prospecting Rights Awarded to Companies in GuineaIndustrial Minerals, No. 204, SEPTEMBER P. 118.Guinea, West AfricaBlank
DS1984-0078
1984
Anon.Mineral Exports from Sierra LeoneIndustrial Minerals, No. 204, SEPTEMBER P. 118.Sierra Leone, West AfricaBlank
DS1984-0083
1984
Anon.The Diamond Industry Back on Its FeetInvestor's Chronicle., JANUARY 13TH. 2P.South Africa, Guinea, West Africa, AustraliaCurrent Activities
DS1984-0085
1984
Anon.De Beers Strives to Boost Diamond Output and Sales, Despiteproblems.Engineering and Mining Journal, Vol. 185, No. 6, JUNE P. 29.South Africa, Venetia, Bophuthatswana, Southwest Africa, NamibiaCurrent Activities
DS1984-0096
1984
Anon.Prospecting in GhanaMining Annual Review., FOR 1983, JUNE P. 405.West Africa, GhanaBlank
DS1984-0097
1984
Anon.Ghana Consolidated Diamonds ProductionIndustrial Minerals, No. 207, DECEMBER P. 66.West Africa, GhanaBlank
DS1984-0098
1984
Anon.Ghana's SparklersWorld Mining Equipment., Vol. 8, No. 5, P. 6.West Africa, GhanaBlank
DS1984-0099
1984
Anon.Diamond Project Is on Time and BudgetInternational Mining, Vol. 1, No. 2, FEBRUARY P. 8.West Africa, GuineaAredor, Production
DS1984-0100
1984
Anon.Bridge Plans Three Wells This MonthCity of London Public Relations Limited., 1P.West Africa, GuineaDiamonds
DS1984-0101
1984
Anon.Guinea's Aredor Diamond Project Takes OffIndiaqua., Vol. 38, No. 1984/2, PP. 21-28.West Africa, GuineaHistory, Production
DS1984-0102
1984
Anon.Guinea Diamonds Expected This YearJewellers Circular Keystone, Vol. 150, No. 1, P. 78.West Africa, GuineaInvestment, Production
DS1984-0103
1984
Anon.Guinea Faces Demands to Reduce Size of Mining ProjectsEngineering and Mining Journal, Vol. 185, No. 6, P. 29 and P. 109.West Africa, GuineaPolitics
DS1984-0104
1984
Anon.Liberia- Gold and DiamondsMining Annual Review., FOR 1983, JUNE, P. 411.West Africa, LiberiaProspecting
DS1984-0105
1984
Anon.Bp Cuts Diamond TiesIndustrial Minerals, No. 206, NOVEMBER PP. 13-14.West Africa, Sierra LeoneHistory, Industry
DS1984-0106
1984
Anon.Sierra Leone DiamondsInternational MINING, Vol. 1, No. 8, P. 87.West Africa, Sierra LeoneProduction, Diamonds
DS1984-0107
1984
Anon.Sierra Leone.. DiamondsMining Annual Review., FOR 1983, JUNE P. 405.West Africa, Sierra LeoneBlank
DS1984-0108
1984
Anon.Diamond Potential of Upper VoltaMining Annual Review., FOR 1983, JUNE P. 409.West Africa, Upper VoltaBlank
DS1984-0132
1984
Balfour, I.The Star of Sierra LeoneIndiaqua., No. 37, 1984/1, PP. 129-131.West Africa, Sierra LeoneDiamonds Notable, History
DS1984-0179
1984
Cahen, L., Snelling, N.J., Delhal, J., Vail, J.R.The Geochronology and Evolution of AfricaOxford Clarendon Press, 512P.Africa, South Africa, West Africa, Central Africa, East AfricaKimberley, Tectonics, Structure, Regional Geology
DM1984-0902
1984
Campbell, C.Bridge Oil for Medium TermDaily Telegraph, APRIL 2ND.West Africa, GuineaAredor, Financing, Project, Investment
DM1984-0903
1984
Campbell, C.The Mining Column.... Bridge OilThe Daily Telegraph, Jan. 9TH.West Africa, GuineaAredor, Investment, Mineral Economics
DM1984-0904
1984
Campbell, C.Bridge Oil's Diamond LinkDaily Telegraph, Jan. 16TH.West Africa, GuineaInvestment
DS1984-0192
1984
Cohen, R.S., Onions, R.K., Dawson, J.B.Isotope Geochemistry of Xenoliths from East Africa- Implications for Development of Mantle Reservoirs and Their Interaction.Earth Planet. Sci. Letters, Vol. 68, No. 2, MAY PP. 209-210.East AfricaGenesis, Related Rocks
DS1984-0193
1984
Cohen, R.S., O'nions, R.K., Dawson, J.B.Isotope Geochemistry of Xenoliths from East Africa: Implications for Development of Mantle Reservoirs and Their Interaction.Earth Plan. Sci. Letters, Vol. 68, PP. 209-220.East Africa, Tanzania, LashaineGeochemistry, Pello Hill
DS1984-0200
1984
Cordes, H.Construction of the Diamond Preparation Plant Gbenko of Aredor Guinea, S.a. in the Republic of Guinea.Erzmetall., Vol. 37, No. 10, OCTOBER PP. 489-494.West Africa, GuineaMining Methods
DS1984-0233
1984
Diallo, D., Galperov, G.Tectonique de la Guinee OccidentalePangea., No. 2, JUNE, PP. 20-27.Guinea, West AfricaTectonics
DM1984-0910
1984
Drummond, L.Analyst Lifts Estimates on Aredor EarningsAustralian Financial Review., Nov. 28TH.West Africa, GuineaBlank
DS1984-0256
1984
El haddad, M.A., Hashad, M.H.The major and minor elements chemistry of Gebel Tarbtie carbonatites southEgyptBulletin. Faculty of Science Sect. C. Assiut Univ, Vol. 13, No. 1, pp. 205-217EgyptSovite
DS1984-0285
1984
Freeth, S.J.How Many Rifts Are There in West Africa?Earth And Planetary Science Letters, Vol. 67, No. 2, FEBRUARY PP. 219-227.West AfricaTectonics, Structure
DS1984-0300
1984
Gerryts, E.A Visit to Guinea- West AfricaGeological Society of South Africa Quarterly NEWS Bulletin., Vol. 28, No. 1, MARCH P. 24.West Africa, GuineaTravelogue, History
DS1984-0331
1984
Haggerty, S.E., Tompkins, L.A.Subsolidus Reactions in Kimberlitic Ilmenites: Exsolution, Reduction and the Redox State of the Mantle.Proceedings of Third International Kimberlite Conference, Vol. 1, PP. 335-357.South Africa, West Africa, Sierra Leone, LiberiaMineral Chemistry, Related Rocks
DS1984-0348
1984
Haut, F.R., Levin, P., Eisenburger, D.Diamantfuehrende Ultrabasite in ObervoltaGeol. Jahrb., Upper Volta, West AfricaKimberlite, Geophysics, Geology, Diamonds
DS1984-0406
1984
Kharkiv, A.D., Zinchuk, N.N., Remizov, V.I.Distinctive Features of the Secondary Mineralization in Kimberlite Rocks of Guinea.Geologii i Geofiziki, No. 11, (299), NOVEMBER PP. 64-West Africa, GuineaMineralogy
DS1984-0407
1984
Kharkiv, A.D., Zinchuk, N.N., Remizov, V.I.Some Distinctive Features of Secondary Mineralization in Kimberlites of Guinea.Soviet Geology And Geophysics, Vol. 25, No. 11, PP. 64-71.West Africa, GuineaMineralogy
DS1984-0418
1984
Koivula, J.I.Gems News. DiamondsGems And Gemology, Vol. 32, No. 1, SPRING PP. 58-59.West Africa, Guinea, Australia, Namaqualand, South AfricaProspecting
DM1984-0920
1984
Lay, P.Sturgeon Reels in Sparkling Diamond CatchThe Daily Express, Jan. 9TH. 1P.West Africa, GuineaRussia, History, Mineral Economics
DS1984-0452
1984
Letnikov, F.A.The Formation of Diamond in Deep Tectonic ZonesDoklady Academy of Science USSR, Earth Science Section., Vol. 271, No. 1-6, PP. 170-171.West Africa, LiberiaGenesis, Diamond Content, Evaluation
DS1984-0460
1984
Loczy, L.Geotectonic aspects of West Africa to the east of the Gulf of Guinea with reference to the connected structures and lithologies between Brasil andAfricaRev. Bra. Geoscience, (in Portugese)., Vol. 14, No. 1, March pp. 47-53West Africa, BrazilTectonics
DS1984-0472
1984
Maisonpierre, R.O'D.Central African RepublicMining Annual Review., FOR 1983, JUNE PP. 395-396.West Africa, Central African RepublicDiamond Production
DM1984-0935
1984
Mcmillan, M.Aredor Mine to Start Despite Toure DeathAustralian Financial Review., MARCH 29TH.West Africa, GuineaDiamond Mining Recovery, Alluvial
DM1984-0936
1984
Mcmillan, M.Bridge to Open Aredor MineAustralian Financial Review., MARCH 15TH.West Africa, GuineaInvestment
DS1984-0509
1984
Meares And PhilipsBridge Oil: Aredor Diamond ProjectInvestment Review., MARCH 3RD. 2P.West Africa, GuineaMarketing, Politics, Mining Recovery, Diamonds
DM1984-0938
1984
Milling stanley, G.Guinea Diamond Mine ExpandsFinancial Times, SEPT. 4TH.Guinea, West AfricaBlank
DM1984-0944
1984
Milling-Stanley, G.Guinea Gem Mine to Open Next MonthFinancial Times, Jan. 13TH.West Africa, GuineaInvestment
DS1984-0534
1984
Morogan, V., Martin, R.F.Partial Melting of Fenitic Assemblages in the Oldoinyo Lengai Carbonatitic Volcano Tanzania.Geological Association of Canada (GAC), Vol. 9, P. 90. (abstract.).Tanzania, East AfricaBlank
DM1984-0946
1984
Mufson, S.Angola Assess Costly Toll of Rise in Gem SmugglingWall Street Journal, Oct. 3RD.Angola, East AfricaIdb, History, Law
DS1984-0545
1984
Naylor, B.Bridge Fills the GapInvestor's Chronicle., Jan. 20TH.West Africa, GuineaInvestment, History
DS1984-0715
1984
Sutherland, D.G.Geomorphology and Mineral Exploration; Some Examples from Exploration for Diamondiferous Placer Deposits.Zeitschr. Fuer Geomorphologie., SUPPL. Vol. 51, PP. 95-108.West Africa, GuineaGeomorphology
DS1984-0716
1984
Sutherland, D.G., Dale, M.L.Method of Establishing the Minimum Sample Size for Sampling alluvial Diamond Deposits.Institute of Mining and Metallurgy. Transactions, Vol. 93, SECT. B, PP. B55-B58.West Africa, Sierra Leone, Ghana, Central African RepublicAlluvial Placer Sampling
DS1984-0720
1984
Synge, R.AredorMining Annual Review., FOR 1983, P. 410.West Africa, GuineaBlank
DS1984-0728
1984
Thomas, M.F., Thorp, M.B., Teeuw, R.Paleogeomorphology and the Occurrence of Diamondiferous Deposits in Koidu Sierra Leone.Paper Presented Ins. Min. Met. And British Geomorphological Re, Nov. 15TH. LONDON, ABSTRACT IN Institute of Mining and Metallurgy (IMM) Bulletin. No. 934, P. 10.Sierra Leone, West AfricaGeomorphology
DS1984-0729
1984
Thomas, M.F., Thorp, M.B., Teeuw, R.Palaeogeomorphology and the Occurrence of Diamondiferous Deposits in Koidu Sierra Leone.Institute of Mining and Metallurgy. MEETING PLACER DEPOSITS, Nov. 15TH.West Africa, Sierra LeoneGeomorphology
DS1984-0733
1984
Tompkins, L.A., Bailey, S.W., Haggerty, S.E.Kimberlitic Chlorites from Sierra Leone, West Africa: Unusual Chemistries and Structural Polytypes.American Mineralogist., Vol. 69, PP. 237-249.West Africa, Sierra LeoneMineral Chemistry, Nodules
DS1984-0734
1984
Tompkins, L.A., Haggerty, S.E.The Koidu Kimberlite Complex, Sierra Leone: Geological Setting, Petrology and Mineral Chemistry.In: Kimberlites. I. Kimberlites And Related Rocks, Kornprobs, PP. 83-105.West Africa, Sierra LeoneDiatreme, Kimberlite, Genesis, Carbonatite, Related Rocks, Craton
DS1984-0773
1984
Woodzick, T.L., Mccallum, M.E.A Teledetective Study of Kimberlite Regions in North America (colorado- Wyoming),east Africa (mwadui) and Siberia (mir). #2Proceedings of Third International Kimberlite Conference, Vol. 1, PP. 5-20.United States, Colorado, Wyoming, State Line, Russia, East Africa, TanzaniaGeophysics, Kimberlite, Remote Sensing, Lineaments
DS1984-0774
1984
Wright, J.B.Geology of West AfricaAllen And Unwin., IN PREP.West Africa, GuineaGeology, Kimberley
DS1985-0003
1985
Ako, J.A., Wellman, P.The Margin of the West African Craton: the Voltaian BasinGeological Society of London Journal, Vol. 142, No. 4, JULY, PP. 625-632.West Africa, Ghana, Togo, Benin, GhanaGeology, Geophysics, Gravity, Aeromagnetic, Seismic
DM1985-0784
1985
Anon.Guinea to Halt Illicit Gem TradeFinancial Times, Jan. 15TH.West Africa, GuineaIdb
DM1985-0785
1985
Anon.Power for AredorLondon Mining Journal, Vol. 304, No. 7803, MARCH 8TH. P. 163.West Africa, GuineaMining Methods
DS1985-0020
1985
Anon.Diamond Smuggling TrialIndustrial Minerals, No. 209, JANUARY P. 70.West Africa, AngolaIdb
DS1985-0037
1985
Baker, B.H.Volcanic and Petrochemical Associations in the Kenya Rift Alkaline province and Their Tectonic Setting.Conference Report of A Meeting of The Volcanics Study Group, 1P. ABSTRACT.East Africa, Kenya, TanzaniaPetrogenesis, Tectonics
DS1985-0080
1985
Bowden, P., Martin, R.F.Niger-nigeria Alkaline Ring Complexes: West Africa Representatives of African Phanerozoic Anorogenic Magmatism.Conference Report On A Meeting of Volcanics Studies Group He, 1P. ABSTRACT.Central Africa, NigerPetrogenesis, Geochemistry
DS1985-0085
1985
Brigaud, F., Lucazeau, F., Ly, S., Sauvage, J.F.Heat Flow from the West African ShieldGeophysical Research. LETTERS, Vol. 12, No. 9, SEPTEMBER PP. 549-552.West AfricaBlank
DM1985-0793
1985
Carr, G.Massive 880 Carat Diamond Is Desk OrnamentDiamond News And South African Jeweller., Vol. 48, No. 4, JANUARY P. 35.Africa, Australia, West Africa, GuineaProduction, Diamonds Notable, Argyle, Industrial Diamond
DS1985-0113
1985
Chadwick, J.Ghanian Mining Bold Plans. Good Potential Has Been Stifled In the Past by National Economic Difficulties, It Is Hoped This Is to Change.International Mining, APRIL, PP. 28-30.West Africa, GhanaAkwatia, Prospecting, Production, History
DS1985-0140
1985
Dawson, J.B., Smith, J.V., Jones, A.P.A Comparative Study of Bulk Rock and Mineral Chemistry of Olivine Melilitites and Associated Rocks from East and South Africa.Neues Jahrbuch f?r Mineralogie, Vol. S 152, No. 2, PP. 143-175.South Africa, East AfricaMineral Chemistry
DM1985-0797
1985
DiamantDiamond Find in GuineaDiamant., JANUARYWest Africa, GuineaNews Item
DM1985-0815
1985
Diamond News And South African JewellerMore Large Gems FoundDiamond News And South African Jeweller., Vol. 48, No. 8, MAY P. 46.West Africa, GuineaDiamonds Notable, Zale
DM1985-0817
1985
Ellis, R.New Lease for Ghana's Diamondsá#1Mining Magazine., Vol. 152, No. 3, PP. 211-216.West Africa, Ghana, Birim RiverHistory, Reserves, Mining Methods
DS1985-0173
1985
Ellis, R.New Lease for Ghana's Diamonds #2Indiaqua., No. 41, 1985/II, PP. 17-22.West Africa, GhanaHistory
DS1985-0188
1985
Fitton, J.G.The Cameroon Line, West Africa: a Comparison between Oceanic and Continental Alkaline Volcanism.Conference Report of A Meeting On Volcanic Studies Held Edin, 1P. ABSTRACT.West Africa, CameroonTectonics, Geochemistry
DS1985-0189
1985
Fitton, J.G., Dunlop, H.M.The Cameroon Line, West Africa, and its Bearing on the Origin of Oceanic and Continental Alkali Basalt.Earth Plan. Sci. Letters, Vol. 72, PP. 23-38.West Africa, CameroonTectonics, Geochemistry, Metasomatism, Large-ion Lithophile Elements (lile), Major Element Chemistry
DS1985-0239
1985
Goodwin, A.M.Rooted Precambrian Ring Shields: Growth, Alignment, and Oscillation.American Journal of SCIENCE., Vol. 285, No. 6, JUNE, PP. 481-531.Canada, West Africa, Central AfricaGeotectonics, Comparison, Compositional Analyses, Belts
DS1985-0250
1985
Greenhalgh, P.West African Diamonds 1919-1983 - an Economic HistoryManchester University Press, 306P.West Africa, Ghana, Sierra LeoneProduction, Methods
DS1985-0256
1985
Haggerty, S.E.The Mineralogy of Global Magnetic Anomalies #2Nasa Cr 174242, 153P.West Africa, Sierra Leone, South Africa, BrazilKimberlite, Geophysics
DS1985-0258
1985
Hall, A.M., Thomas, M.F., Thorp, M.B.Later Quaternary Alluvial Placer Development in the Humid Tropics: the Case of the Birim Diamond Placer, Ghana.Journal of the Geological Society of London., Vol. 142, PP. 777-787.West Africa, GhanaGeomorphology, Stratigraphy, Diamond Distribution, Sorting Mech
DS1985-0260
1985
Hall, R.Row Shakes Diamond State RulersObserver., JANUARY 27TH.West Africa, Sierra LeoneHistory, Politics, Jamil, Economics
DS1985-0294
1985
Holland, C.H.Lower Paleozoic of North Western and West Central AfricaWiley, Chichester., 512P.West Africa, Chad, Sierra LeoneReview, Synthesis Of Regional Geology
DM1985-0828
1985
IndiaquaMiscellany of Diamond Finds from Angola to Zaire. Accounts Taken from Previous Issues and Compiled in This 40th. Anniversary Issue.Indiaqua., No. 40, 1985/1, PP. 17-25. VERY BRIEF NOTATIONS.West Africa, Central Africa, Angola, Botswana, Myanmar, TanzaniaNotes
DS1985-0328
1985
Kapustin, YE.L., Polyakov, A.I.Carbonatite Volcanoes of Eastern Africa and the Genesis of CarbonatitesIzves. Akad. Nauk, Sssr., No. 3, MARCH PP. 30-43.East AfricaBlank
DS1985-0329
1985
Kapustin, YU.L., Polyakov, A.I.Carbonatite Volcanoes of East Africa and the Genesis of Carbon- AtitesInternational Geology Review, Vol. 27, No. 4, pp. 434-448East Africa, Kenya, Uganda, TanzaniaCarbonatite
DS1985-0388
1985
Lemeyre, J.Generation of Alkaline Magmas by Pressure Release in Within plate Oceanic and Continental Province.Geological Society of America (GSA), Vol. 17, No. 3, P. 164. (abstract.).West AfricaGenesis
DS1985-0391
1985
Liegeois, J.P., Black, R.Alkaline Magmatism Subsequent to Collision in the Pan African Belt of the Adar des Iforas (mali).Geological Society of America (GSA), Vol. 17, No. 3, P. 165. (abstract.).West Africa, MaliOccurrences
DM1985-0892
1985
London Mining JournalGhana's Mineral DriveLondon Mining Journal, Vol. 304, No. 7810, APRIL 26TH. P. 292.West Africa, GhanaProduction
DM1985-0893
1985
London Mining JournalDiamonds for Sierra LeoneLondon Mining Journal, Vol. 305, No. 7821, JULY 12TH. P. 29.West Africa, Sierra LeoneDiamonds Notable
DM1985-0894
1985
London Mining JournalKimberlite Diamond Mining Plan ResurrectedLondon Mining Journal, Vol. 305, No. 7838, NOVEMBER 8TH. PP. 356-357.West Africa, Sierra LeoneEconomics, Diamond Mining
DS1985-0528
1985
Phillips, W.J.Report on a Joint Meeting on Placer Deposits Organized by The Institution of Mining and Metallurgy and the British Geomorphological Research Group. Held November 14, 1984.Institute of Mining and Metallurgy. Transactions, Vol. 94, SECT. B, PP. B46-48.West Africa, Sierra Leone, East Africa, SwazilandBlank
DS1985-0545
1985
Price, R.C., Johnson, R.W., Gray, C.M., Frey, F.A.Geochemistry of Phonolites and Trachytes from the Summit Region of Mt. Kenya.Contributions to Mineralogy and Petrology, Vol. 89, No. 4, PP. 394-409.East Africa, KenyaGeochemistry
DS1985-0578
1985
Sack, R.O., Carmichael, I.S.E.Experimental Constraints on the Genesis of Alkalic Basalt Lavas.Geological Society of America (GSA), Vol. 17, No. 3, P. 189. (abstract.).East Africa, United States, Crazy MountainsKalsilite, Leucite
DS1985-0663
1985
Thomas, M.F., Thorp, M.B., Teeuw, R.M.Palaeogeomorphology and the Occurrence of Diamondiferous Placer Deposits in Koidu, Sierra Leone.Journal of the Geological Society of London., Vol. 142, PP. 789-802.West Africa, Sierra LeoneModel, Terrain, Domain, History, Composition, Occurrence
DS1985-0675
1985
Tompkins, L.A., Haggerty, S.E.Groundmass Oxide Minerals in the Koidu Kimberlite Dikes, Sierra Leone, West Africa.Contributions to Mineralogy and Petrology, Vol. 91, No. 3, PP. 245-263.West Africa, Sierra LeonePetrology
DS1985-0740
1985
Woolley, A.R., Jones, G.C.The Chilwa Alkaline Igneous Province, Malawi: Petrochemistry and Petrogenesis.Conference Report of The Meeting of The Volcanics Studies Gr, 1P. ABSTRACT.East Africa, MalawiEast African Rift, Tectonics, Geochemistry
DS1985-0743
1985
Wright, J.B., Hastings, D.A., Jones, W.B., Williams, H.R.Geology and Mineral Resources of West AfricaAllen and Unwin Publ, 200pWest AfricaMineral Resources, Book -table Of Contents -listed Due To Interest
DS1986-0033
1986
Attoh, K.Lithotectonic domains of the West African craton- reviewedGeological Society of America (GSA) Abstract Volume, Vol. 18, No. 6, pp. 529-530. (abstract.)West AfricaTectonics
DS1986-0063
1986
Bell, K., Blenkinsop, J.Carbonatites and the sub continental upper mantleGeological Association of Canada (GAC) Annual Meeting, Vol. 11, p. 44. (abstract.)East AfricaGeochronology, Carbonatite
DS1986-0090
1986
Bosellini, A.East Africa continental marginsGeology, Vol. 14, No. 1, January pp. 76-78East AfricaTectonics
DS1986-0091
1986
Bosworth, W.Off axis volcanism in the Gregory rift, East Africa and modelsfor continental riftingGeological Society of America (GSA) Abstract Volume, Vol. 18, No. 6, p. 547. (abstract.)Kenya, East AfricaTectonics
DS1986-0092
1986
Bosworth, W.A new look at Gregory's rift: the structural style ofcontinentalriftingEos, Vol. 67, No. 29, July 22, p. 577, pp. 582-583Kenya, East Africatectonics
DM1986-1022
1986
London Mining JournalTanzania encourages private mining sectorLondon Mining Journal, Vol. 306, No. 7858, March 28, p. 220Tanzania, East AfricaNews item, Airborne surveys
DM1986-1031
1986
Mining MagazineDiamonds. anonymous, Afro West Mining CompanyMining Magazine, Vol. 154, No. 5, May p. 385West AfricaNews item - press release
DS1986-0645
1986
Platt, R.G., Woolley, A.R.The mafic mineralogy of the peralkaline syenites and granites of the Mulanje Complex, MalawiMineralogical Magazine, Vol. 50, No. 1, No. 355, pp. 85-100MalawiBlank
DS1986-0648
1986
Porcelli, D.R., O'Nions, R.K., O'Reilly, S.Y.Helium and strontium isotopes in ultramafic xenolithsChemical Geology, Vol. 54, pp. 237-249East Africa, Tanzania, Australia, Victoria, FranceLachaine, Pello Hill, Bulletinenmerri, Puy Beaunit, Ataq, Hot spots, Geochronology
DS1986-0671
1986
Ritz, M., Robineau, B.Crustal and upper mantle electrical conductivity structures inWestAfrica: geodynamic implicationsTectonophysics, Vol. 124, pp. 115-126West AfricaTectonics, Structure
DS1986-0731
1986
Sheppard, S.M.F.Igneous rocks: III isotopic case studies of magmatism in Africa, Eurasia and Oceanic islandsReviews in Mineralogy, Vol. 16, Chapter 10, pp. 319-340West AfricaCameroun, Nigeria
DS1986-0808
1986
Toft, P.B., Haggerty, S.E.A remanent and induced magnetization model of magsat vector anomalies over the West African cratonGeophysical Research Letters, Vol. 13, No. 4, April pp. 341-344West AfricaTectonics, Geophysics
DS1986-0828
1986
Van Straaten, P.Some aspects of the geology of carbonatites in southwest TanzaniaGeological Association of Canada (GAC) Annual Meeting, Vol. 11, p. 140. (abstract.)Tanzania, East AfricaCarbonatite
DS1986-0858
1986
Watson, J.V., Reading, H.G.Major crustal lineaments and their influence on the geological history Of the continental lithosphere.Phil. Transactions Royal Society of London, Vol. A317, pp. 1-290.West Africa, central AfricaTectonics, rifting, lineaments, shear zones, volcanism.
DS1986-0875
1986
Wooley, A.R., Platt, R.G.The mineralogy of nepheline syenite complexes from the northern part of the Chilwa Province, MalawiMineralogical Magazine, Vol. 50, No. 358, December pp. 597-610MalawiAlkaline rocks
DS1987-0044
1987
Bell, K., Blenkinsop, J.Neodynium and strontium isotopic compositions of East African carbonatites:implications for mantle heterogeneityGeology, Vol. 15, No. 2, pp. 99-102East AfricaCarbonatite, Geochronology
DS1987-0051
1987
Bertrandsarfati, J., Moussinepouchkine, A., Caby, R.Correlations in West Africa from Proterozoic to Cambrian- a new geodynamicinterpretation.*freBulletin. Soc. Geologique de France, (in French), Vol. 3, No. 5, pp. 855-866West AfricaTectonics
DS1987-0212
1987
Fitton, F.G., Upton, B.G.J.Alkaline igneous rocksBlackwell: Geol. Society Special Paper No.28, 900pEast AfricaGreenland, Cameroons
DS1987-0549
1987
Onugba, A., Ajakaiye, D.E.Resistivity and seismic refraction survey of the Masari-KafurKimberlite pipe in NigeriaExploration 87, Technical abstract volume, held Toronto, Sept. 27-Oct., p. 52 abstract onlyNigeriaGeophysics
DS1987-0671
1987
Shieh, Y.N., De Mulder, M.Oxygen and strontium isotope constraints on the origin of the Karisimbipotassic lava series, Virunga East African rift valleyGeological Society of America, Vol. 19, No. 7 annual meeting abstracts, p.842. abstracEast AfricaBasanite
DS1987-0677
1987
Shudofsky, G.N., Cloetingh, S., et al.Unusually deep earthquakes in East Africa: constraints on the thermomechanical structure of a continental rift systemUnknown, Vol. pp. 741-744East AfricaTectonics
DS1987-0734
1987
Thomas, C.W., Nixon, P.H.Lower crustal granulite xenoliths in carbonatite volcanoes Of the Western Rift of East AfricaMineralogical Magazine, Vol. 51, No. 363, December pp. 621-634East AfricaBlank
DS1987-0809
1987
Woolley, A.R.Lithosphere metasomatism and the petrogenesis of the Chilwa Province of alkaline igneous rocks and carbonatites, MalawiJournal of African Earth Science, Vol. 6, No. 6, pp. 891-898MalawiCarbonatite
DS1988-0207
1988
Fadaie, K.Geophysical and isotopic constraints on the lithosphere of the east African rift systemPh.d. Thesis, Carleton University, East AfricaTectonics, Geochronology
DS1988-0208
1988
Fairhead, J.D.Mesozoic plate tectonic reconstructions of the central SouthAtlanticOcean: the role of the West and Central African rift systemsTectonophysics, Vol. 155, No. 1-4, Dec. 1, pp. 181-192West AfricaTectonics, Rift systems
DS1988-0209
1988
Fairhead, J.D., Okereke, C.S.Depths to major density contrasts beneath the West African rift system in Nigeria and Cameroon based on the spectral analysis of gravity dataJournal of African Earth Sciences, Vol. 7, No. 5-6, pp. 769-778Nigeria, Cameroon, West AfricaTectonics, Rift systems
DS1988-0239
1988
Gee, L.L., Sack, R.O.Experimental petrology of melilite nephelinitesJournal of Petrology, Vol. 29, pt. 6, December pp. 1233-1255East Africa, HawaiiMt. Nyiragongo, Melilite
DS1988-0540
1988
Perrin, M., Prevot, M.Uncertainties about the Proterozoic and Paleozoic polar wanderpath Of the West African craton and Gondwana: evidence for successive remagnetizationeventsEarth and Planetary Science Letters, Vol. 88, No. 3-4, May pp. 337-347West AfricaBlank
DS1988-0574
1988
Ritz, M., Bellion, Y.Structure of the Senegalo-Mauritanian basin West Africa, from geoelectrical studiesTectonophysics, Vol. 148, No. 3/4, May 1, pp. 235-240West AfricaTectonics
DS1988-0656
1988
Sougy, J., Rodgers, J.The West African connection: evolution of the central Atlantic ocean And its continental marginsProceedings of the Penrose Conference held in France Jan 17-22, 1984, pp. 311-515West AfricaBlank
DS1988-0693
1988
Tiercelin, J.J., Chorowicz, J., Bellon, H., Richert, J.P., et al.East African rift system: offset, age and tectonic significance of the Tanganyika-Rukwa -Malawi intracontinental transcurrent fault zoneTectonophysics, Vol. 148, No. 3/4, May 1, pp. 241-252East AfricaBlank
DS1988-0701
1988
Toft, P.B.Magsat anomalies over the main shield of the West African craton in relation to magnetization and evolution of the lithospherePh.D. Thesis, University of Massachusetts, 239p. University of MicrofilmsWest AfricaGeophysics -Magnetics, Kimberlite, eclogite
DS1988-0702
1988
Toft, P.B., Haggerty, S.E.Limiting depth of magnetization in cratonic lithosphereGeophysical Research Letters, Vol. 15, No. 5, May pp. 530-533West AfricaBlank
DS1988-0729
1988
Venkatakrishnan, R., Culver, S.J.Plate boundaries in west Africa and their implications for Pangean continental fitGeology, Vol. 16, No. 4, April pp. 322-325West AfricaBlank
DS1989-0002
1989
Abouchamy, W., Boher, M., Michard, A., Albarede, E., et al.Crustal growth in West Africa at 2.1 Ga: preliminary resultsEos, Vol. 70, No. 15, April 11, p. 485. (abstract.)West Africa, Mauritania, Senegal, Mali, Guinea, Ivory CoastGhana, Burkina Faso, Tectonics, Geochronology
DS1989-0102
1989
Bell, K., Blenkinsop, J.Neodynium and strontium isotope geochemistry of carbonatitesCarbonatites -Genesis and Evolution, Ed. K. Bell Unwin Hyman Publ, pp. 278-300East AfricaGeochemistry, Geochronology, Kimberlite
DS1989-0149
1989
Bosworth, W.Basin and range style tectonics in East AfricaJournal of African Earth Sciences, Vol. 8, No. 2/3/4, pp. 191-202East AfricaTectonics, Rifting -Basin and Range
DS1989-0319
1989
Curtis, P.C., Meen, J.K., Glazner, A.F.Liquid lines of descent in alkalic continental riftmagmas; petrologic, geochemical, and experimental constraints from the East African riftNew Mexico Bureau of Mines Bulletin., Continental Magmatism Abstract Volume, Held, Bulletin. No. 131, p. 65. AbstractEast Africa, KenyaTectonics
DS1989-0325
1989
Dallmeyer, R.D.Contrasting accreted terranes in the southern Appalachian orogen basement beneath the Atlantic and Gulf coastal plains, and west African orogensPrecambrian Research, Vol. 42, pp. 387-409. Database # 17818Appalachia, West AfricaAccreted terranes, Tectonics
DS1989-0326
1989
Dallmeyer, R.O.Late Paleozoic vs. late Proterozoic Pan African tectonothermal activity in the Mauritanide orogen,West AfricaGeological Society of America (GSA) Abstract Volume, Vol. 20, No. 2, p. 11, (abstract.)West AfricaTectonics, Orogeny
DS1989-0386
1989
Ebinger, C.J.Tectonic development of the western branch of the East African riftsystemGeological Society of America (GSA) Bulletin, Vol. 101, No. 7, July pp. 885-903Kenya, East AfricaTectonics, Rifts
DS1989-0387
1989
Ebinger, C.J., Karner, G.D., Weissell, J.K.Mechanism of rift flank uplift: examples from East AfricaEos, Vol. 70, No. 43, October 24, p. 1336. AbstractEast AfricaTectonics, Rift
DS1989-0434
1989
Flores, G.The southern extension of the East African Rift systemJournal of African Earth Sciences, Vol. 8, No. 2/3/4, pp. 429-430East AfricaTectonics, Rifting East Africa
DS1989-0512
1989
Girard, J-P, Deynoux, M., Nahon, D.Diagenesis of the upper Proterozoic siliciclastic sediments of the Taoudeni basin, West Africa, and relation to diabase emplacementJournal of Sedimentary Petrology, Vol. 59, No. 2, March pp. 233-248. Database # 17951West AfricaProterozoic, Diagenesis
DS1989-0556
1989
Guerrot, C., Peucat, J.J., Capdevila, R., Dosso, L.Archean protoliths within early Proterozoic granulitic crust of the west European Hercynian belt: possible relics of the west African cratonGeology, Vol. 17, No. 3, March pp. 241-244West AfricaCraton, Proterozoic
DM1989-1788
1989
IndiaquaBridge Oil sells rough diamond of 181.77 cts for A$10.2 m (United States $ 8.5m)Indiaqua, No. 52, 1989/I. p. 55Guinea, West AfricaNews item, Diamond 181
DS1989-0743
1989
Kampunzu, A.B., Kanika, M.Petrologie des laves alcalines de Mwenga-Kamituga dans le riftest-Africain et heterogeneite du manteausubcontinental.(in French)Geological Association of Canada (GAC) Annual Meeting Program Abstracts, Vol. 14, p. A49. (abstract.)East AfricaMwenga-Kamituga
DS1989-0750
1989
Karson, J.A., Curtis, P.C.Tectonic and magmatic processes in the Eastern Branch of the East African rift and implications for magmatically active continental riftsJournal of African Earth Sciences, Vol. 8, No. 2/3/4, pp. 431-454East AfricaTectonics, Rifting -East Africa rift
DS1989-0847
1989
Lameyre, J., Black, R., Giret, A.Le magmatism alcalin: donnees geologiques sur quelques provinces oceaniques et continentales.(in French)Geological Association of Canada (GAC) Annual Meeting Program Abstracts, Vol. 14, p. A49. (abstract.)West Africa, NigeriaAlkaline rocks
DS1989-0937
1989
Mariano, A.N.Nature of economic mineralization in carbonatites and related rocksCarbonatites -Genesis and Evolution, Ed. K. Bell Unwin Hyman Publ, pp. 149-California, China, Tanzania, Burundi, Brazil, VenezuelaKenya, Australia, Rare earths, Economics
DS1989-0938
1989
Mariano, A.N.Classification of rare earth elements (REE) in carbonatitesReviews in Mineralogy: Geochemistry and mineralogy of Rare earth, Vol. 21, pp. 330-334California, Malawi, Tanzania, Brazil, Burundi, China, AustraliaCarbonatite, rare earth elements (REE).
DS1989-1058
1989
Morley, C.K.Extension, detachments, and sedimentation in continental rifts (with particular reference to EastAfrica)Tectonics, Vol. 8, No. 6, December pp. 1175-1192East AfricaTectonics, Rifting
DS1989-1153
1989
Onugba, A., Bello, A., Ajakaiye, D.E.Resistivity and seismic refraction survey of the Masari/Kafur Kimberlite pipe in northern Nigeria ( and its groundwater reserves)Journal of African Earth Sciences, Vol. 9, No. 2, pp. 235-243NigeriaGeophysics, Seismics
DS1989-1179
1989
Pasteels, P., Villeneuve, M., De Paepe, P., Klerkx, J.Timing of volcanism of the southern Kivu province:implications for the evolution of the western branch of the East African Rift systemEarth and Planetary Science Letters, Vol. 94, No. 3/4 September pp.353-363East AfricaTectonics, Rift
DS1989-1206
1989
Peterson, T.D.Peralkaline nephelinites. I. Comparative petrology of Shombole and Oldoinyo l'engai,East AfricaContributions to Mineralogy and Petrology, Vol. 101, No. 4, pp. 458-478Tanzania, East AfricaNephelinite, Oldoinyo L'engai
DS1989-1297
1989
Rogers, J.J.W., Rosendahl, B.R.Perceptions and issues in continental riftingJournal of African Earth Sciences, Vol. 8, No. 2/3-4, pp. 137-42.East Africa, TanzaniaTectonics - rifting, plate
DS1989-1334
1989
Sander, S., Rosendahl, B.R.The geometry of rifting in Lake Tanganyika, East AfricaJournal of African Earth Sciences, Vol. 8, No. 2/3/4, pp. 323-354East AfricaTectonics, Rifting -Lake Tanganyika
DS1989-1499
1989
Tiercelin, J-J., Mondeguer, A., Scholz, C.A.Seismic and sedimentary discontinuities in the Lake Tanganyika Rift, EastAfricaEos, Vol. 70, No. 43, October 24, p. 1362. AbstractEast AfricaGeophysics, Rift
DS1989-1600
1989
West AfricaFlood threat to Angolan mineWest Africa, March 9, 1989 (Indiaqua No. 53, 1989/II p. 46)West AfricaNews item
DS1989-1601
1989
West AfricaSierra Leone. BriefWest Africa, March 9, 1989 (Indiaqua No. 53, 1989/II p. 46)West AfricaNews item
DS1989-1602
1989
West AfricaGhana overview. -briefWest Africa, March 9, 1989 (Indiaqua No. 53, 1989/II p. 46)West AfricaNews item, Production
DS1990-0195
1990
Berhe, S.M.Ophiolites in northeast and East Africa: Implications for Proterozoic crustal growthJournal of the Geological Society of London, Vol. 147, No. 1, pp. 41-58East AfricaOphiolites, Proterozoic
DS1990-0483
1990
Folger, D.W., Irwin, B.J., McCullough, J.R., Rowland, R.W., PolloniMap showing free air gravity anomalies off the southern coast of west central Africa: Liberia to GhanaUnited States Geological Survey (USGS) Map, No. MF-2098-E 1: 500, 000 $ 1.50West AfricaGravity, Map, Geophysics
DS1990-0621
1990
Gurenko, A.A., Sobolev, A.V., Kononkova, N.N., Shcherbovskiy, Ye.Ya.Olivine from the ultrabasic and basic rocks of the East African rift system differentiated seriesGeochemistry International, Vol. 27, No. 10, pp. 117-123East AfricaPetrology, Ultrabasics -olivine -analyses
DS1990-0803
1990
Kapustin, Yu.L.Distribution of niobium and tantalum in Fergusonite-bearing carbonatites and their weathering crust.(Russian)Geochemistry International, Vol. 27, No. 10, pp. 84-95East AfricaCarbonatite, Fergusonite -Nb, Ta
DS1990-0869
1990
Komarov, A.N., Ilupin, I.P.Fission track dating of the Siberian platform kimberlitesGeochemistry International, Vol. 27, No. 10, pp. 55-61East AfricaGeochronology, Kimberlites -zircon
DS1990-0880
1990
Kostrovitsky, S.I., Piskunova, L.F.Two groups of symplectites from the same kimberlite pipeDoklady Academy of Sciences USSR Earth Science Section, Vol. 306, No. 3, pp. 176-179East AfricaSymplectites (ilmenite-clinopyroxenite), Kimberlite
DS1990-0917
1990
Lemoine, S., Tempier, P., Bassot, J.P., Caen-vachette, M., VialetteThe Burkinian orogenic cycle, precursor of the Eburnian orogeny in WestAfricaGeological Journal, Vol. 25, pp. 171-188Ghana, Ivory Coast, Burkina Faso, west AfricaTectonics, Orogeny
DS1990-1131
1990
Olasehinde, P.I., Pal, P.C., Annor, A.E.Aeromagnetic anomalies and structural lineaments in the Nigerian BasementComplexJournal of African Earth Sciences, Vol. 11, No. 3/4, pp. 351-356NigeriaGeophysics -magnetics, Tectonics
DS1990-1186
1990
Piper, D.P.Lineament analysis of the environs of the Malawi rift and the influence of pre-existing structures on rift morphologyJournal of African Earth Sciences, Vol. 9, No. 3/4, pp. 579-587MalawiTectonics, Structure -rift
DS1990-1238
1990
Robineau, B., Ritz, M.Geoelectrical signature of the Central Mauritanides deep structure, Mauritania, West AfricaTectonics, Vol. 9, No. 6, December pp. 1649-1662West AfricaTectonics, Geophysics -seismics
DS1990-1292
1990
Said, R.Geology of EgyptBalkema Publishing Co, 734p. $ 85.00 approx. ISBN 90-6191-856-1EgyptBook, Geology
DS1990-1519
1990
Villeneuve, M.Structure and evolution of the Panafrican II basins in the western part Of the West African craton.(in French)Bulletin. Soc. Geol. de France, (in French), Vol. 6, No. 1, Jan-Feb. pp. 155-166West AfricaCraton, Structure
DS1991-0007
1991
Aina, A., Emofurieta, W.O.VLF anomalies at contacts between Precambrian rocks in southwest NigeriaGeoexploration, Vol. 28, No. 1, April, pp. 55-66NigeriaGeophysics -VLF., Precambrian
DS1991-0008
1991
Aina, A., Emofurieta, W.O.The use of very low frequency electromagnetic method for non-conductive resource evaluation and geological mappingJournal of African Earth Sciences, Vol. 12, No. 4, pp. 609-616NigeriaGeophysics, Electromagnetics -mapping
DS1991-0313
1991
Cosgrove, J., Jones, M.Neotectonics and resourcesBelhaven Press, 450p. Cost?Costa Rica, Taiwan, Egypt, Papua New Guinea, JapanNeotectonics, Book -table of contents
DS1991-0331
1991
Dallmeyer, R.D., Lecorche, J.P.The West African orogens and circum Atlantic correlativesSpringer-Verlag, 402pWest Africa, Spain, Europe, AppalachiaTectonics, structure, craton, orogeny, Terranes
DS1991-0347
1991
Davis, P.M.Continental rift structures and dynamics with reference to teleseismic studies of the Rio-Grande Rift and East African RiftsTectonophysics, Vol. 197, No. 2-4, October 30, pp. 309-326Arizona, New Mexico, East AfricaTectonics, Rifting
DS1991-0417
1991
Ebinger, C.J., Karner, G.D., Weissel, J.M.Mechanical strength of extended continental lithosphere -constraints From the western Rift system, East AfricaTectonics, Vol. 10, No. 6, Decemberpp. 1239-1258East AfricaTectonics, western Rift system
DS1991-0441
1991
Emofurieta, W.O.VLF anomalies at contacts between Precambrian rocks in southwesternNigeriaGeoexploration, Vol. 28, No. 1, April, pp. 55-66NigeriaGeophysics -VLF., Basement
DS1991-0465
1991
Fairhead, J.D., Okereke, C.S., Nnange, J.M.Crustal structure of the Mamfe basin, West Africa, based on gravity @SOURCE[ TectonophysicsTectonophysics, Vol. 186, pp. 351-358West Africa, Nigeria, Benue TroughGeophysics -gravity, Tectonics
DS1991-0591
1991
Goodwin, P.B., et al.Evaluation and updating of offshore base maps using SPOT satellite image sand GPS control, West AfricaProceedings of the Eighth Thematic Conference on Geologic Remote, Vol. I, pp. 253-264West AfricaRemote sensing, Offshore maps
DS1991-0647
1991
Halderman, T.P., Davis, P.M.Qp beneath the Rio Grande and East African Rift ZonesJournal of Geophysical Research, Vol. 96, No. B6, June 10, pp. 10, 113-10, 128Colorado Plateau, East Africa, TanzaniaGeophysics, Tectonics
DS1991-0821
1991
Kamel, A.F.Analysis of structural lineaments and their effect on the distribution of ring complexes in southeastern desert, EgyptJournal of African Earth Sciences, Vol. 13, No. 2, pp. 193-200EgyptStructure, Ring complexes
DS1991-0838
1991
Kebede, F., Kulhanek, O.Recent seismicity of the East African Rift system and its implicationsPhysics of the Earth and Planetary Interiors, Vol. 68, No. 3-4, September pp. 259-273East AfricaGeophysics -seismics, Tectonics -rifting
DS1991-0842
1991
Keller, P.C.Gem deposits in the 21st. Century - a look to the futureGeological Association of Canada (GAC)/Mineralogical Association of Canada (MAC)/SEG Annual Meeting May 27-29. Toronto, Ontario, Abstract, Vol. 16, p. A64. AbstractChina, East AfricaGem deposits, General
DS1991-0843
1991
Keller, P.C.Gems of East AfricaGeological Association of Canada (GAC)/Mineralogical Association of Canada (MAC)/SEG Annual Meeting May 27-29. Toronto, Ontario, Abstract, Vol. 16, p. A64. AbstractEast Africa, Tanzania, KenyaDiamonds, Gem materials -general
DS1991-0882
1991
Kjarsgaard, B., Peterson, T.Nephelinite-carbonatite liquid immisibility at Shombole volcano, East-Africa-petrographic and experimental evidenceMineral. Petrology, Vol. 43, No. 4, May pp. 293-314East Africa, TanzaniaCabonatite, Experimental petrology
DS1991-1019
1991
Lucazeau, F., Lesquer, A., Vasseur, G.Trends of heat flow density from West AfricaTerrestrial Heat Flow and the Lithosphere Structure, editors Cermak, V. and, Springer Verlag, pp. 417-425West AfricaHeat flow, Geophysics
DS1991-1144
1991
Meyers, J.B., Rosendahl, B.R.Deep seismic imaging of the continental ocean crust transition, central West AfricaGeological Society of America Annual Meeting Abstract Volume, Vol. 23, No. 5, San Diego, p. A 89West AfricaGeophysics -seismics, Rifting
DM1991-2189
1991
Mining MagazineMinerals industries of the SADCC (South African Dev. CoordinatingCouncil)Mining Magazine, Vol. 164, No. 6, June pp. 360, 363, 365-366Angola, Botswana, Lesotho, Malawi, Mozambique, NamibiaSwaziland, Tanzania, Zambia, Zimbabwe, Diamonds -brief mentions
DS1991-1434
1991
Roberts, A.M., Yielding, G., Freeman, B.The geometry of normal faultsGeological Society of London Special Publication, No. 56, 275pBaltic States, North Sea, Alps, Germany, Greece, EgyptStructure, fault, geophysics, seismics, Tectonics
DS1991-1586
1991
Simonetti, A., Bell, K.Isotopic investigation of the Lake Chilwa carbonatite Complex, Malawi:implications for the origin of carbonatite magmasGeological Association of Canada (GAC)/Mineralogical Association of Canada/Society Economic, Vol. 16, Abstract program p. A114MalawiGeochronology, Carbonatite
DS1991-1794
1991
Verhoef, B.J., et al.Magnetic anomalies off West AfricaMarine Geophysical Researches, Vol. 13, pp. 81-103.West AfricaGeophysics -magnetics, Marine
DS1991-1890
1991
Woolley, A.R.The Chilwa alkaline igneous province of Malawi: a reviewMagmatism in Extensional structural settings, Springer pp. 377-409.MalawiAlkaline rocks, Carbonatite
DS1991-1926
1991
Zhang DazhengSpatial patterns of magma emplacement and their relations to crustalstructures; statistical and spectral methods and applicationsPh.d. thesis, University of Pennsylvania, Philadelphia, 253pAfrica, West Africa, South Africa, MexicoMagmas, Ring complexes
DS1992-0004
1992
Achauer, U.A study of the Kenya rift using delay time tomography analysis and gravitymodelingTectonophysics, Vol. 209, pp. 197-207East Africa, KenyaTectonics, Geophysics -gravity
DS1992-0009
1992
Aftab Khan, M., Maguire, P.K.H., Swain, C.J.Geophysical models of the Kenya riftTectonophysics, Vol. 209, pp. 209-211. Extended abstractEast Africa, KenyaTectonics, Geophysics -gravity, seismics
DS1992-0010
1992
Aina, A., Olarewaju, V.O.Geological interpretation of aeromagnetic dat a in some parts of North central NigeriaJournal of Africam Earth Sciences, Vol. 14, No. 1, pp. 103-109NigeriaGeophysics, Granite ring complexes
DM1992-1762
1992
Bedell, R.L.Jr.Digital mapping in mining: an African exampleMining Magazine, Vol. 166, No. 2, February pp. 86-89BurundiComputer mapping, Program -digital mapping, GIS
DS1992-0112
1992
Bell, K.Isotopic dat a from carbonatite-nephelinite centres and the nature of the east African sub-continental upper mantleEos Transactions, Vol. 73, No. 14, April 7, supplement abstracts p.329East Africa, UgandaCarbonatite, Nephelinite
DS1992-0147
1992
Bosworth, W.Mesozoic and Early Tertiary rift tectonics in East AfricaTectonophysics, Vol. 209, pp. 115-137East Africa, KenyaTectonics, Rifting
DS1992-0198
1992
Butt, C.R.M., Zeegers, H.Regolith exploration geochemistry in tropical and subtropical terrainsElsevier, 600pAustralia, Africa, Algeria, Burkina Faso, Sudan, MaliGeochemistry -laterites, Book -table of contents
DS1992-0235
1992
Chapola, L.S., Kaphwiyo, C.E.The Malawi rift: geology, tectonics and seismicityTectonophysics, Vol. 209, pp. 159-164East Africa, MalawiTectonics, Structure, lineaments
DS1992-0248
1992
Chery, J., Lucazeau, F., Daignieres, M., Vilotte, J.P.Large uplift of rift flanks: a genetic link with lithospheric rigidity?Earth and Planetary Science Letters, Vol. 112, pp. 195-212Red Sea, Rhine, East Africa, Baikal, RussiaMantle structure MRDU, Rifting
DS1992-0252
1992
Chorowicz, J., Sorlien, C.Obique extensional tectonics in the Malawi Rift, AfricaGeological Society of America (GSA) Abstract Volume, Vol. 104, No. 8, August pp. 1015-1023East AfricaTectonics, Malawi Rift
DS1992-0507
1992
Gaciri, S.J.Lineament map of Kenya: correlations of lineaments to known geologicaldataTectonophysics, Vol. 209, pp. 139-142. extended abstractEast Africa, KenyaTectonics, Structure, lineaments
DS1992-0647
1992
Haggerty, S.E.Diamonds in West Africa: tectonic setting and kimberlite productivityRussian Geology and Geophysics, Vol. 33, No. 10, pp. 35-49West AfricaTectonics, Kimberlites
DS1992-0861
1992
Kilembe, E.A., Rosendahl, B.R.Structure and stratigraphy of the Rukwa riftTectonophysics, Vol. 209, pp. 143-158East Africa, TanzaniaTectonics, Structure, lineaments
DS1992-0914
1992
Laval, M., Hottin, A.M.The Mlindi ring structure. an example of an ultrapotassic pyroxenite to syenite differentiated complexGeologische Rundschau, Vol. 81, No. 3, pp. 737-757MalawiUltrapotassic rocks, Structure
DS1992-1081
1992
Moore, R.Placer diamonds in West AfricaNorthwest Territories Geoscience Forum held November 25, 26th. 1992, AbstractWest Africa, NamibiaAlluvials
DS1992-1091
1992
Morley, C.K., Cunningham, S.M., Harper, R.M., Wescott, W.A.Geology and geophysics of the Rukwa Rift, East AfricaTectonics, Vol. 11, No. 1, February pp. 69-East AfricaTectonics, Rukwa Rift
DS1992-1136
1992
Olayinka, A.I.Geophysical siting of boreholes in crystalline basement areas of AfricaJournal of African Earth Sciences, Vol. 14, No. 2, February, pp. 197-208Africa, NigeriaGeophysics, Mantle, Basement
DS1992-1223
1992
Porcelli, D.R., O'Nions, R.K., Galer, S.J.G., Cohen, A.S., MatteyIsotopic relationships of volatile and lithophile trace elements in continental ultramafic xenolithsContributions to Mineralogy and Petrology, Vol. 110, No. 2-3, pp. 528-538Australia, Arizona, East AfricaUltramafic xenoliths, Geochronology
DS1992-1277
1992
Ring, U., Betzler, C., Delvaux, D.Normal vs strike-slip faulting during rift development in East Africa: the Malawi rift.Geology, Vol. 20, No. 11, November pp. 1015-1018.Tanzania, Mozambique, East AfricaTectonics, Malawi Rift
DS1992-1497
1992
Sultan, M., Bickford, M.E., El Kaliouby, B., Arvidson, R.E.Common lead systematics of Precambrian granitic rocks of the Nubian Egypt and tectonic implicationsGeological Society of America (GSA) Bulletin, Vol 104, No. 4, April pp. 456-470EgyptOphiolite, Tectonics
DS1992-1507
1992
Sylvester, P.J., Attoh, K.Lithostratigraphy and composition of 2.1 Ga greenstone belts of the West African craton and their bearing on crustal evolution and the Archean-Proterozoic BoundaryJournal of Geol, Vol. 100, pp. 377-393Ghana, West AfricaCraton, Greenstone belts
DS1992-1557
1992
Toft, P.B., Taylor, P.T., Arkanantha..., J., Haggerty, S.E.Interpretation of satellite magnetic-anomalies over the West Africancraton.Tectonophysics, Vol. 212, No. 1-2, Oct. 1, pp. 21-32.West AfricaGeophysics -magnetics, remote sensing, Craton
DS1992-1680
1992
Windley, B.Proterozoic collisional and accretionary orogensProterozoic Crustal Evolution, K.C. Condie, Developments in Precambrian, Chapter 11, pp. 419-446.Northwest Territories, Ghana, West AfricaTectonics, Wopmay, Thelon, Birimian
DS1993-0067
1993
Bailey, D.K.Petrogenetic implications of the timing of alkaline, carbonatite, and kimberlite igneous activity in Africa.South African Journal of Geology, Vol. 96, No. 3, Sept. pp. 67-74.Africa, West AfricaCraton, Kimberlites
DS1993-0088
1993
Bartok, P.Prebreakup geology of the Gulf of Mexico-Caribbean: its relation to Triassic and Jurassic rift systems of the regionTectonics, Vol. 12, No. 2, April pp. 441-459West Africa, Pangea, Caribbean, South AmericaTectonics, Structure
DM1993-1854
1993
Chadwick, J.Francophone Africa... overviewMining Magazine, Vol. 169, No. 2, August pp. 64-73Algeria, Benin, Burkina Faso, Central African Republic, Chad, Congo, GuineaIvory Coast, Mali, Morocco, Niger, Senegal, Togo, Tunisia, Zaire
DS1993-0338
1993
Delvaux, D.Rifting in the western branch of the East African Rift System (review)Geotectonics, Vol. 26, No. 3, pp. 238-245Central Africa, East AfricaTectonics, structure, Cenozoic rifts, East African Rift
DS1993-0452
1993
Foster, D.A., Gleadow, A.J.W.Episodic denudation in East Africa: a legacy of intracontinentaltectonism.Geophysical Research Letters, Vol. 20, No. 21, November 5, pp. 2395-2398.East Africa, Kenya, TanzaniaTectonics, Isostacy, Thermochronology
DS1993-0595
1993
Gurenko, A.A., Kononkova, N.N.Zoning of minerals as an indicator of the redox conditions of their crystallization ( as illustrated by high-potassium magma of the East AfricanRift)Doklady Academy of Sciences USSR, Earth Science Section, Vol. 318, No. 1-6, March 1992 Publishing date pp. 162-169Africa, East AfricaTectonics, Alkaline rocks
DS1993-0661
1993
Hester, B.Opportunities for mining investment in third world Africa- styles of project financing in a changing sceneSociety for Mining, Metallurgy and Exploration (SME) Meeting held February 15-18, 1993 in Reno, Nevada, Reprint No. 93-137, 3pGhana, Ethiopia, Guinea, Mali, Ivory CoastEconomics, Financing
DS1993-0662
1993
Hester, B.Opportunities for mining investment in third world AfricaMining Engineering, Vol. 45, No. 8, August pp. 1016-1021Ghana, Ethiopia, Ivory Coast, Guinea, MaliEconomics, Mining investment
DS1993-0727
1993
Jackson, J., Blenkinsop, T.The Malawi Earthquake of March 10, 1989: deep faulting within the East African Rift systemTectonics, Vol. 12, No. 5, Oct. pp. 1131-39.East Africa, MalawiTectonics, Rifting
DC1993-2669
1993
Loumic Resources LtdSearch for diamonds in AfricaGeorge Cross Newsletter Press Release, No. 120, June 23, p. 2.West AfricaNews item - press release
DS1993-0972
1993
Marcoux, E., Milesi, J.P.Lead isotope signature of Early Proterozoic ore deposits in Western Africa:comparison with gold deposits in French GuianaEconomic Geology, Vol. 88, No. 7, November pp. 1862-1879West AfricaGeochronology, Deposits -regional geology
DS1993-0983
1993
Maurin, J.C.The Pan-African West Congo belt: links with eastern Brasil and geodynamicalreconstructionInternational Geology Review, Vol. 35, No. 5, pp. 436-452Africa, Gabon, West Africa, BrazilGeodynamics, Craton
DS1993-1166
1993
O'Neill, D.Mining investment in Africa... an Australian perspectiveNatural Resources forum, Vol. 17, No. 4, pp. 262-272Africa, Zimbabwe, West AfricaEconomics, Mining investment
DS1993-1223
1993
Peters, J.W., Kesse, G.O., Acquah, P.C.Regional trends in African geology. Proceedings 9th. International Geol. Conference held Accra 1992Geological Society Africa/Ghana, 420pGhana, Uganda, Tanzania, Zaire, Togo, Ivory CoastGold, Tarkian, Birimian, Proterozoic, Mozambique, Book -Table of contents
DC1993-2749
1993
Resources Robex Inc, Mink Mineral Resources3 million dollar Mali diamond joint venturePress Release, 2p. plus older releases attachedMaliNews item -press release, Mink Mineral Resources Inc.
DS1993-1311
1993
Ring, U.Aspects of the kinematic history and mechanisms of superposition of the Proterozoic mobile belts of eastern Central Africa (northern Malawi and sTanzania.Precambrian Research, Vol. 62, No. 3, June pp. 207-226.Tanzania, MalawiProterozoic belts, Structure
DS1993-1488
1993
Smith, M., Mosley, P.Crustal heterogeneity and basement influence on the development of the Kenya Rift, East Africa.Tectonics, Vol. 12, No. 2, April pp. 591-606.East Africa, KenyaTectonics, Craton -Tanzanian
DC1993-2828
1993
Verdstone Gold CorpVerdstone negotiating Mali diamond joint venturePromotional Brochure, Handout From Two Day Seminar Held Vancouver, B.c. May, 3p.MaliPromotional brochure, Company information
DS1994-0076
1994
Attoh, K.Significance of corona reactions and eclogite production in the Pan African Dahomeyide orogen.Geological Society of America (GSA) Abstract Volume, Vol. 26, No. 7, ABSTRACT only p. A259.West AfricaMineralogy, Eclogite
DS1994-0216
1994
Brown, E.T., Bourles, D.I., Colin, F., et al.The development of iron crust lateritic systems in Burkin a Faso: examine din situ produced cosmogenic nuclidesEarth and Planetary Science Letters, Vol. 124, No. 1/4, June pp. 19-34Burkina Faso, West AfricaLaterites, Duricrust
DS1994-0424
1994
Deynoux, M., et al.Earth's glacial record and its tectonic settingCambridge University of Press, 275pUnited States, South Africa, Australia, Brazil, China, MaliEarth's glacial record, Book - table of contents
DS1994-0425
1994
Deynoux, M., Miller, J.M.G., Domack, E.W., Eyles, N.Earth's glacial recordCambridge University of Press Book, 270p.Brazil, China, United States, West Africa, Mali, South AfricaGeomorphology -glacial record, Sedimentology
DM1994-2118
1994
Engineering and Mining JournalMineral potential of western AfricaEngineering and Mining Journal, February pp. ww-18-21West Africa, Sierra Leone, Mauritania, Senegal, MaliGreenstone belts, Guinea, Liberia, Ivory Coast, Burkina Faso, Niger
DM1994-2171
1994
Hall, S.The minerals industry of OmanMining Magazine, Vol. 171, No. 3, September pp. 122, 124, 126OmanCountry overview, Minerals industry
DS1994-0854
1994
Journal of African Earth SciencesMozambique and related belts in Zambia and MalawiJournal of African Earth Sciences, Vol. 19, No. 3, Oct. pp. 153-250Zambia, Malawi, Zimbabwe, Tanzania, AntarcticaBook -table of contents, Tectonics, metamorphism
DS1994-1013
1994
Ledru, P., Johan, Milesi, TegyeyMarkers of the last stages of the PaleoProterozoic collision: evidence fora 2 Ga continent involving circum South Atlantic provinces.Pres. Res., Vol. 69, pp. 169-91.Brazil, Gabon, Guiana, French Guiana, West AfricaTectonics
DS1994-1262
1994
Nance, R.D., Murphy, J.B.Contrasting basement isotopic signatures, palinspastic restoration of peripheral orogens: eg. Neoproterozoic.Geology, Vol. 22, No. 7, July pp. 617-620.West AfricaGeochronology, Avalonian Cadomian belt, Tectonics
DS1994-1274
1994
Ngwenya, B.T.Hydrothermal rare earth mineralization in carbonatites Tundulu complex:processes fluid/rock interface.Geochimica et Cosmochimica Acta, Vol. 58, No. 9, pp. 2061-2072.MalawiCarbonatite, Rare earths
DS1994-1391
1994
Pohl, W.Metallogeny of the northeastern Kibara belt, Central Africa- recentperspectivesOre Geology Reviews, Vol. 9, pp. 105-130Zambia, Angola, Zaire, Burundi, Tanzania, RwandaMetallogeny
DS1994-1606
1994
Simonetti, A.Comparative neodymium, lead, and Strontium isotopic study of alkaline complexes from East Africa and India: melt dynamics.Carleton University, Ph.d. thesisAfrica, India, MalawiAlkaline complexes, Thesis
DS1994-1607
1994
Simonetti, A.Comparative neodymium, lead and Strontium isotopic study of alkaline complexes from East Africa and India: mantle source...Ph.d. Thesis, University of of Ottawa, Uganda, Kenya, Malawi, IndiaGeochronology, Deposit - Napak, Mt. Elgon, Chilwa, Amba Dongar
DS1994-1608
1994
Simonetti, A., Bell, K.Isotopic and geochemical investigation of the Chilwa Island carbonatiteComplex, Malawi: evidence depleted..Journal of Petrology, Vol. 35, No. 6, Dec. pp. 1597-1622.MalawiCarbonatite, Geochemistry
DS1994-1690
1994
Stern, R.J.Arc assembly and continental collision NeoProterozoic East African Orogen:implications for consolidation of Gondwanaland.An. Rev. Earth and Planet. Sciences, Vol. 22, pp. 319-352.Africa, East AfricaGondwanaland, Tectonics
DS1994-1752
1994
Taylor, W.R., Tompkins, L.A., Haggerty, S.E.Comparative geochemistry of West African kimberlites: evidence for amicaceous kimberlite endmember sublith.Geochimica et Cosmochimica Acta, Vol. 58, No. 19, pp. 4017-4037.West Africa, Sierra LeoneGeochemistry, Kimberlites -micaceous
DS1994-1762
1994
Thomas, M.F.Geomorphology in the tropicsJohn Wiley and Sons, 450p. $ 300.00Brazil, Africa, Chile, Zambia, Nigeria, Sierra LeoneWeathering, saprolites, laterites, denudation, Nickel, gold, quaternary, Ghana, Birim, evolution
DS1994-1770
1994
Thompson, R.N., Gibson, S.A.Interplay between lithospheric and convecting mantle sources during continental rift related magmatism.International Symposium Upper Mantle, Aug. 14-19, 1994, pp. 115-117.United States, Colorado, New Mexico, East Africa, Russia, BaikalMantle, Tectonics, magma
DS1994-1820
1994
Valentin, C.Surface sealing as affected by various rock fragment covers in WestAfricaCatena, Vol. 23, pp. 87-97West Africa, Guinea, Burkina Faso, Ghana, Benin, NigeriaPaleosols, Regosols, weathering
DS1994-1874
1994
Wall, F., Barreiro, B.A., Spiro, B.Isotopic evidence for late stage processes in carbonatites: rare earth mineralization in carbonatitesMineralogical Magazine, Vol. 58A, pp. 951-952. AbstractMalawiCarbonatite
DS1994-1887
1994
Watkins, A.P., Iliffe, J.E., Sharp, W.E.The effects of extensional and transpressional tectonics upon the development of Birimian sed. faciesJournal of African Earth Sciences, Vol. 17, No. 4, pp. 457-478Ghana, West AfricaTectonics, Bomfa Beposo District
DS1994-1952
1994
Woolley, A.R., Eby, G.N., Platt, R.G.The North Nyasas alkaline province, MalawiGeological Association of Canada (GAC) Abstract Volume, Vol. 19, p.MalawiAlkaline rocks, North Nyasas
DS1994-1979
1994
Zeese, R., Scwertmann, U., Tietz, G.F., Jux, U.Mineralogy and stratigraphy of three deep lateritic profiles of the Josplateau (Central Nigeria)Catena, Laterization and Supergene Ore, Vol. 21, No. 2-3, pp. 195-214NigeriaMIneralogy, Laterization
DS1995-0009
1995
Affaton, P., Trompette, R., Uhlein, A., Boudzoumou, F.The Panafrican Brasiliano Aracuai West Congo fold belt in the framework Of western Gondwana aggregation 600MaGeological Society Africa 10th. Conference Oct. Nairobi, p. 20. AbstractWest Africa, BrazilTectonics, Rodinia Supercontinent
DS1995-0198
1995
Braile, L.W., Keller, G.R., Wendlandt, R.F., Morgan, P.The East African rift systemContinental Rifts: evolution, structure, tectonics, No. 25, pp. 213-232Kenya, Ethiopia, East AfricaGeophysics, Basin structure
DS1995-0477
1995
Eby, G.N., Roden-Tice, M., et al.Geochronology and cooling history of the northern part of the Chilwaalkaline Province Malawi.Journal of African Earth Sciences, Vol. 20, No. 3-4, pp. 275-288.MalawiAlkaline rocks, Chilwa Alkaline Province
DS1995-0501
1995
EOSTransform tectonics of the West African margin exploredEos, Vol. 76, No. 30, July 25, pp. 299.West AfricaTectonics
DS1995-0536
1995
Feybesse, J.L., Bronner, G.The Monts Nimba and Simandou Ranges: allochthonous terranes resting upon the Archean basement?Geological Society Africa 10th. Conference Oct. Nairobi, p. 21. AbstractWest AfricaCraton, Tectonics not specific to diamonds
DS1995-0628
1995
Germs. G.J.B.The Neoproterozoic of southwestern Africa, with emphasis on platform stratigraphy and paleontologyPrecambrian Research, Vol. 73, pp. 137-151Africa, Namibia, West AfricaStratigraphy
DS1995-0846
1995
Institute of Mining and Metallurgy (IMM)African Mining 95Institute of Mining and Metallurgy (IMM) Publ, 590pUganda, Zimbabwe, Ghana, Tanzania, Namibia, MaliMining, economics, gold, exploration, Book -Table of contents
DS1995-0930
1995
Keller, G.R., Wendlandt, R.F., Bott, M.H.P.West and Central African rift zoneContinental Rifts: evolution, structure, tectonics, No. 25, pp. 437-452West Africa, Central AfricaGeophysics - seismics, gravity, Tectonics, shear zones
DS1995-0931
1995
Keller, G.R., Wendlandt, R.F., Bott, M.H.P.West and Central African rift zoneContinental Rifts: evolution, structure, tectonics, No. 25, pp. 437-452.West Africa, Central AfricaGeophysics - seismics, gravity, Tectonics, shear zones
DS1995-0982
1995
Kogarko, L., Woolley, A.R.Alkaline rocks and carbonatites of the world. Part 2. Former USSRChapman and Hall Book, 225p. approx. $ 200.00Russia, Kola, Ukraine, Karelia, Anabar, VitiM., Cameroon, Chad, CongoAlkaline rocks, Carbonatite
DM1995-2332
1995
London Mining JournalAshton spreads.. upgraded AK1 resource at ArgyleLondon Mining Journal, Vol. 325, No. 8340, Aug. 18, p. 124.Australia, Russia, Norway, Indonesia, MaliNews item, Ashton Mining Ltd.
DM1995-2510
1995
Northern MinerMining in Africa. Special section issueNorthern Miner, Vol. 80, No. 49, Feb. 6, pp. B1-B28Africa, West AfricaNews item, Country overviews -current exploration
DS1995-1368
1995
Nyblade, A.A., Langston, C.A.East African earthquakes below 20 km depth and their implications for crustal structure.Geophys. Journal, Vol. 121, pp. 49-62.East Africa, Kenya, Tanzania, Mozambique, Zaire, ZambiaTectonics
DS1995-1457
1995
Pearson, D.G., Davies, G.R., Nixon, P.H.Orogenic ultramafic rocks of ultra high pressure (UHP) (diamond facies) originCambridge University of Press, pp. 456-510.Morocco, Spain, British Columbia, Russia, Tibet, Burkina FasoPeridotite - Beni Bousera, Ronda, Ophiolites - diamondiferous
DS1995-1518
1995
Precambrian 95Abstract volume - ore genesis, stratiform, magmatic, gold, greenstonebelts, crust, PrecambrianPrecambrian 95, Volume, $ 35.00South America, West Africa, Quebec, Abitibi, IndiaBook -table of contents, Mountain bldg., mantle, tectonics, Superior, Orogeny
DS1995-1610
1995
Rosendahl, B.R., et al.The Tanganyika, Malawi, Rukwa and Turkana Rift zones East Africa: an intercomparison of rift architectures..Basement Tectonics 10, held Minnesota Aug 92, pp. 139-148.East Africa, Tanzania, MalawiTectonics, Structure
DS1996-0461
1996
Foster, D.A., Gleadow, J.W.Structural framework and denudation history of the flanks of the Kenya and Anza Rifts, East Africa.Tectonics, Vol. 15, No. 2, Apr. pp. 258-71.Kenya, East AfricaTectonics, Rifting
DS1996-0606
1996
Harris, N.B.W., Bartlett, J.M., Santosh, M.Neodymium isotope constraints on the tectonic evolution of East GondwanaJournal of Southeast Asian Sciences, Vol. 14, No. 3-4, pp. 119-125India, Sri Lanka, Madagascar, East Africa, GondwanaGeochronology, Tectonics
DM1996-1948
1996
Insight PressWorking with international agreementsInsight Press, $ 175.00Peru, Chile, Kazakhstan, West Africa, IndonesiaMining agreements, Table of contents
DM1996-1979
1996
London Mining JournalAshton looks to the futureLondon Mining Journal, Vol. 327, No. 8394, Sept. 6, p. 179.Australia, Indonesia, West AfricaNews item, Ashton Mining
DM1996-2164
1996
Mining MagazineWest African gold.. revised mining laws have renewed interest in WestAfrica.Mining Magazine, Vol. 174, No. 2, Feb. pp. 90-99.Ghana, Guinea, Ivory Coast, Mali, Mauritania, Burkina FasoNiger, Senegal, Gold exploration -not specific to diamonds
DC1996-2837
1996
Mink Mineral Resources IncFinancing disclosure.. President and family have agreed to exchange their free trading shares to private placees.Mink Resources Inc., July 23, 1p.MaliNews item - press release
DC1996-2838
1996
Mink Mineral Resources IncKenieba diamond.. drilling of three kimberlite bodies, Pipe 117, Batifara and New Discovery at Kassema.Mink Mineral Resources Inc., May 30. 1p.MaliNews item - press release
DC1996-2839
1996
Mink Mineral Resources IncNew kimberlite pipe discovered... Kenieba Diamond ConcessionMink Mineral resources Inc., March 15, 1p.MaliNews item -press release, Ashton Mining
DC1996-2840
1996
Mink Mineral Resources Inc$ 3.4 million private placement... $ 3.40 to be used for Kenieba Diamond Joint Venture with Ashton.....Mink Mineral Resources Inc., March 20, 1p.MaliNews item -press release, Ashton Mining Ltd.
DS1996-1247
1996
Salah Ama, I., Liegeois, J-P., Pouclet, A.Evolution d'un arc insulaire oceanique birimien precoce au Liptako nigerien(Sirba) geologie, geochronologieJournal of African Earth Sciences, Vol. 22, No. 3, pp. 235-254Nigeria, West Africa, Burkina FasoBirimian Domain, Magma
DS1996-1420
1996
Thomas, R.J., Shackleton, R.M., Muhongo, S.Special issue International Geological Correlation Programme (IGCP) 348 Mozambique and related beltsJournal of African Earth Sciences, Vol. 23, No. 3, Oct. 1, pp. 269-480.Egypt, Sudan, Somalia, Ethiopia, Tanzania, South AfricaMozambique, Adola, Namaqualand, Natal, Arabia-Nubian shield
DS1996-1452
1996
Upcott, N.M., Mukasa, R.K., Karner, G.D.Along axis segmentation and isostasy in the western Rift, East AfricaJournal of Geophysics Research, Vol. 101, No. 2, Feb. 10, pp. 3247-68.Tanzania, East AfricaTectonics, Rifting
DS1996-1497
1996
Wall, F., Mariano, A.N.Rare earth minerals in carbonatites: a discussion centred on the Kangankunde carbonatite, Malawi.Mineralogical Soc. Series, No. 7, pp. 193-226.MalawiRare earth minerals, Carbonatite, Deposit - Kangankunde
DS1996-1560
1996
Woolley, A.R., Platt, R.G., Eby, G.N.Relatively aluminous alkali pyroxene in nepheline syenites from Malawi:mineralogical response...Canadian Mineralogist, Vol. 34, pt. 2, April pp. 423-434.MalawiAlkaline rocks, metamorphism
DS1997-0049
1997
Attoh, K., Dallmeyer, P.Chronology of nappe assembly in the Pan -African Dahomeyide Orogen, WestAfrica: evidence 40Ar/39Ar agesPrecambrian Research, Vol. 82, No. 1-2, March 1, pp. 153-West Africa, GhanaGeochronology, Orogeny
DS1997-0050
1997
Attoh, K., Dallmeyer, R.D., Affaton, P.Chronology of nappe assembly in the Pan-African Dahomeyide orogen, WestAfrica: evidence from 40 Ar 39Precambrian Research, Vol. 82, No. 1-2, March pp. 153-172West Africa, GhanaGeochronology, Orogeny
DS1997-0261
1997
De Wit, M., Ashwal, L.D.Greenstone beltsOxford Press, 850p. $ 450.00Northwest Territories, Ontario, Wyoming, West AfricaBrasil, Zimbabwe, Amazon, South Africa, Tanzania, Zaire, Australia, Baltic
DS1997-0286
1997
Dorre, A.S., et al.Crustal thickness of Egypt determined by gravity dataJournal of African Earth Sciences, Vol. 25, No. 3, Oct. pp. 425-34EgyptGeophysics - gravity
DS1997-0307
1997
Ebinger, C., Djomani, Y.P., Mbede, E., Foster, DawsonRifting Archean lithosphere: the Eyasi Manyara Natron Rifts, East AfricaJournal of the Geological Society of London, Vol. 154, pp. 947-960.Tanzania, East AfricaTectonics, Geophysics - gravity anomalies
DS1997-0312
1997
El-Hadj Tidjani, M., et al.Gravity characteristics of the Pan African Orogen in Ghana To go and West Africa.Journal of African Earth Sciences, Vol. 24, No. 3, April pp. 241-258.Ghana, West AfricaGeophysics - gravity, Tectonics
DS1997-0569
1997
Kalt, A., Hegner, E., Satir, M.neodymium, Strontium, and lead isotopic evidence for diverse lithospheric mantle sources of East African carbonatiteTectonophysics, Vol. 278, No. 1-4, Sept. 15, pp. 31-46.Africa, east Africa, Tanzania, KenyaTectonics, Rifting, Carbonatite
DM1997-1635
1997
London Mining JournalMalawi venture.... Caledonia and Rareco jv on Kangankunde carbonatitepipe.London Mining Journal, Vol. 328, No. 8429, May 16, p. 393.MalawiNews item, Caledonia Mining
DC1997-2404
1997
Mink International Resources CorpNew kimberlite deposit discovered in Mali diamond project... initial results indicate more kimberlites.Mink International Res. Corp., 2p.MaliNews item - press release
DC1997-2405
1997
Mink International Resources CorpMajor airborne geophysical survey for gold and diamond projectsMink International Resources Corp., Feb. 10, 2p.MaliNews item - press release
DC1997-2406
1997
Mink International Resources CorpTwo more kimberlite pipes discovered in Mali propertyMink International Resources Corp., July 16, 1p.MaliNews item - press release
DC1997-2407
1997
Mink International Resources CorpGeophysical surveys yielding positive results in Mali diamond and goldprojects.... Kanieba diamond project.Mink International Resources Corp., March 11, 1p.MaliNews item - press release
DC1997-2408
1997
Mink International Resources CorpFive more macro diamonds found in Mali projectMink International Resources Corp., Nov. 21, 2p.MaliNews item - press release
DC1997-2409
1997
Mink International Resources CorpInformation circular... diamond exploration to start in October...Keyconsultant appointed.. Dearn Lee.Mink Minerals, Sept. 25, 3p.MaliNews item - press release
DC1997-2410
1997
Mink International Resources Corp70.62 carat diamond discovered in Kenieba concession.. Ashton Mining assumes full management Kenieba project.Mink International Resources, April 28, 2p.MaliNews item - press release, Ashton Mining
DC1997-2411
1997
Mink International Resources CorpSixty two (62) new kimberlite targets and anomalies identified by Ashton in Kenieba diamond project.Mink International Resources Corp., May 4, 1p.MaliNews item - press release, Ashton Mining
DC1997-2412
1997
Mink International Resources CorpMali diamond project to be drilled.... to locate source of large alluvialdiamonds.Mink International Resources Corp., Oct. 15, 2p.MaliNews item, Ashton Mining Ltd.
DS1997-0859
1997
Nyblade, A.A.Heat flow the East African PlateauGeophy. Res. Letters, Vol. 24, No. 16, Au. 15, pp. 2083-86.East AfricaMantle, Plumes, geothermometry
DM1997-2006
1997
O'Connor, T.The Franc Zone: a bastion of stability?London Mining Journal, Vol. 328, No. 8414, Jan. 31, suppl. p. 18-19Central Africa, Mali, Benin, CongoEconomics, Legal, mining
DS1997-0968
1997
Rollinson, H.Eclogite xenoliths in west African kimberlites as residues from Archean granitoid crust formation.Nature, Vol. 389, No. 6647, Sept. 11, pp. 173-176.West AfricaEclogite
DS1997-1044
1997
Simiyu, S.M., Keller, G.R.An integrated analysis of lithospheric structure across the East African plateau based on gravity anomalies.Tectonophysics, Vol. 278, No. 1-4, Sept. 15, pp. 291-314.Africa, east Africa, Tanzania, KenyaTectonics, Geophysics - gravity
DS1997-1139
1997
Tardy, Y., Sarma, V.A.K.Petrology of laterites and tropical soilsBalkema, 500p. approx. $ 150.00Africa, Central Africa, West Africa, Ivory CoastBook - table of contents, Laterites
DS1997-1150
1997
Tesha, A.L., Nyblade, A.A., Doser, D.I.Rift localization in suture thickened crust: evidence from bouguer gravity anomalies in northeast Tanzania.Tectonophysics, Vol. 278, No. 1-4, Sept. 15, pp. 315-328.Africa, east Africa, Tanzania, KenyaTectonics, Geophysics - gravity
DC1997-2577
1997
Trivalance Mining CorpDiamond test results.... Avedor diamond concessionGeorge Cross Newsletter, No. 133, July 11.Ghana, West AfricaNews item - press release
DS1997-1171
1997
Trompette, R.Neoproterozoic ( ~ 600 Ma) aggregation of Western Gondwana: a tentativescenario.Precambrian Research., Vol. 82, No. 1-2, March pp. 101-112.Brazil, West AfricaTectonics, Orogeny, Rifting
DS1997-1172
1997
Trompette, R.Neoproterozoic ~ 600 Ma aggregation of Western Gondwana: a tentativescenarioPrecambrian Research, Vol. 82, pp. 101-112Ghana, Brazil, West AfricaTectonics, orogeny, Rifting
DS1998-0103
1998
Bell, K.Radiogenic isotope constraints on relationships between carbonatites and associated silicate rocks - review...Journal of Petrology, Vol. 39, No. 11-12, Nov-Dec. pp. 1987-96.East Africa, TanzaniaCarbonatite - geochronology, Review, Shombole, Oldoinyo Lengai
DS1998-0178
1998
Budaev, D.A.Populational model of kimberlites: an application to diamondiferous kimberlite regions with geodynamics...7th International Kimberlite Conference Abstract, pp. 108-110.Russia, Yakutia, South Africa, West Africa, LesothoPetrochemistry, Kimberlite - composition
DS1998-0190
1998
Burke, K.Do three or more rifts that meet indicate the location or the former location of an underlying mantle plume?Geological Society of America (GSA) Annual Meeting, abstract. only, p.A344.Tanzania, East AfricaTectonics, Mantle plumes
DS1998-0305
1998
Davies, G.A channelled plume under AfricaNature, Vol. 395, Oct. 22, pp. 743-4.East Africa, Madagascar, EthiopiaLithosphere - plume, Tectonics
DS1998-0377
1998
Ebinger, C.J., Sleep, N.H.Cenozoic magmatism throughout East Africa resulting from impact of a singleplume.Nature, Vol. 395, Oct. 22, pp. 788-91.East Africa, Madagascar, EthiopiaLithosphere - plume, Tectonics
DS1998-0706
1998
Journal of African Earth SciencesEast African Rift systems.... special issueJournal of African Earth Sciences, Vol. 26, No. 3, pp. 343-494.East AfricaTectonics, Rift systems
DS1998-0707
1998
Journal of African Earth SciencesEast African Rift systemJournal of African Earth Sci, Vol. 26, No. 3, pp. 343-495East Africa, TanzaniaRift system, Tectonics
DS1998-0999
1998
Meyers, J.B., Rosendahl, B.R., Harrison, C., Dong-DingDeep imaging seismic and gravity results from the offshore Cameroon Volcanic Line and African hotlines.Tectonophysics, Vol. 284, No. 1-2, Jan. 15, pp. 31-63.West Africa, Sierra LeoneGeophysics - seismics, Mantle convection, Craton
DC1998-2823
1998
Mink International Resources CorpExploration of promising areas in Mink Ashton Kenieba diamond concessionunderway.Mink International, Jan. 28, 3p.MaliNews item - press release, Ashton Mining Ltd.
DC1998-2824
1998
Mink International Resources CorpKenieba diamond project update... Kassama pipe core samples, Cirque pipe size from drilling.Mink International, June 8, 2p.MaliNews item - press release, Ashton Mining Ltd.
DC1998-2825
1998
Mink International Resources CorpFirst priority target confirmed as kimberlite pipe half tonne kimberlites ample to Ashton lab for testing....Mink International Resources Corp., March 16, 1p.MaliNews item - press release, Kenieba project
DC1998-2826
1998
Mink International Resources Corp, Ashton MiningDiamond drilling to begin immediately....Sansanto areaMink International, Jan. 21, 2p.MaliNews item - press release, Ashton Mining
DC1998-2827
1998
Mink International Resources Corp, Ashton Mining Ltd18, 000 sq km Kenieba diamond concession in Mali, West Africa... hunt for sources of alluvials.Mink International Resources Corp., May 15, 1p.MaliNews item - press release
DC1998-2828
1998
Mink International Resources Corp, Ashton Mining LtdTwo diamond bearing pipes in Ashton evaluation stage drilling of Kassama pipe completed... samples tested.Mink International Resources Corp., June 29, 1p.MaliNews item - press release, Deposit - Batifara pipe, Pipe 117
DS1998-1087
1998
Nyblade, A.A.Upper mantle structure beneath Tanzania: implications for the origin ofuplift, rifting, volcanism E. AfricaGeological Society of America (GSA) Annual Meeting, abstract. only, p.A107.Tanzania, East AfricaTectonic, Craton
DS1998-1180
1998
Potrel, A., Peucat, J.J., Fanning, C.M.Archean crustal evolution of the West African Craton: example of the Amsagaarea (Reguibat Rise).Precamb. Res., Vol. 90, No. 3-4, July 1, pp. 107-118.West AfricaCraton, crustal growth, recycling, subduction, Geochronology
DS1998-1212
1998
Rapp. R.P., Shimizu, N.Subduction and slab melting in the Archean: experimental constraints And implications for craton..7th. Kimberlite Conference abstract, pp. 720-22.South Africa, Siberia, West AfricaCraton - Kaapvaal, Subsduction, tectonics
DS1998-1240
1998
Ritsema, J., Nyblade, A.A., Van Decar, J.C.Upper mantle seismic velocity structure beneath Tanzania, implications For the stability of cratonic..Journal of Geophysical Research, Vol. 103, No. 9, Sept. 10, pp. 21, 201-14.Tanzania, East AfricaGeophysics - seismics, Craton, lithosphere
DS1998-1564
1998
Ward, J.R., Norman, D.I.Geochemical and physical aspects of diamonds from the Akwatia and Tarkwa diamond fields, southern Ghana.7th International Kimberlite Conference Abstract, pp. 953-4.Ghana, west AfricaDiamond morphology, Deposit - Akwatia, Tarkwa
DS1998-1571
1998
Watts, A.B., Stewart, J.Gravity anomalies and segmentation of the continental margin offshore WestAfrica.Earth and Planetary Science Letters, Vol. 156, No. 3-4, Mar. 30, pp. 239-252.West AfricaGeophysics - gravity, Rifting - flexure
DS1999-0231
1999
Furman, T., Graham, D.Erosion of lithospheric mantle beneath the East African Rift system:geochemical evidence from Kivu volcanicsLithos, Vol. 48, No. 1-4, Sept. pp. 237-62.East Africa, KenyaGeochemistry, Lithosphere
DS1999-0670
1999
Simakov, S.K.Garnet clinopyroxene geobarometry of deep mantle eclogites and eclogite paleogeotherms.7th International Kimberlite Conference Nixon, Vol. 2, pp. 783-87.Russia, West Africa, Australia, South AfricaGeothermometry, Eclogites
DS2000-0052
2000
Bailey, D.K., Woolley, A.R.The wider tectono-magmatic context of the Chilwa alkaline provinces, MalawiIgc 30th. Brasil, Aug. abstract only 1p.MalawiCarbonatite, Geochronology, tectonics
DS2000-0062
2000
Barry, T.L., Kampunzu, Rasskazov, Ivanov, Zhaivolcanism and rifting: contrast between East African and Central East Asian rifts.Igc 30th. Brasil, Aug. abstract only 1p.East Africa, AsiaTectonics - rifting
DS2000-0155
2000
Chesley, J.T., Rudnick, R.L., Lee, C.T.Geochemical evidence for plume metasomatism and old lithospheric mantle beneath the East African Rift.Geological Society of America (GSA) Abstracts, Vol. 32, No. 7, p.A-164.Tanzania, East AfricaMetasomatism - xenoliths, Geophysics - seismic, tomography
DS2000-0349
2000
Goossens, P.J.Mining in Africa: pros and cons... special reference to West AfricaEngineering and Mining Journal, Vol. 201, No. 9, Sept. p.45-95.West AfricaMining - overview
DS2000-0350
2000
Gorayeb, P.S.S., Moura, C.A.V., Gaudette, H.E., AbreuTransamazonic evolution of Sao Luis Craton and northwest Ceara Brasil - and its coerrelation with west Africa.Igc 30th. Brasil, Aug. abstract only 1p.Brazil, West AfricaCraton - tectonics, Magmatism
DS2000-0368
2000
Guiraud, R., Doumnang Mbaigne, J-C.Evidence for a 6000 km length northwest -southeast striking lineament in northern Africa: the Tibesti lineament.Journal of Geological Society of London, Vol. 157, No. 5, Sept.pp. 897-900.Africa, north, Egypt, SudanStructure, Lineaments
DS2000-0403
2000
Heilbron, M., Brito Neves, B.B., Pimentel, M.M., et al.Neoproterozoic orogenic systems in eastern, central and northeastern Brasil,and evolution of Gondwana.Igc 30th. Brasil, Aug. abstract only 1p.Brazil, West AfricaTectonics - Craton, orogeny
DS2000-0719
2000
Nyamai, C.M., Haapala, I.Petrochemistry of the melilite bearing uncompahgrite and turjaite rock types South Rangwe Complex, Kenya.Igc 30th. Brasil, Aug. abstract only 1p.Kenya, western KenyaMelilites
DS2000-0720
2000
Nyblade, A.A.Seismic velocity structure of the upper mantle beneath the East African Rift system: evidence - mantle plumeIgc 30th. Brasil, Aug. abstract only 1p.East Africa, TanzaniaGeophysics - seismics, Craton - rifting
DS2000-0721
2000
Nyblade, A.A., Langston, C.A., Owens, T.J.Seismic structure of the Tanzania Craton: implications for the stability of cratonic lithosphere.Geological Society of America (GSA) Abstracts, Vol. 32, No. 7, p.A-164.Tanzania, East AfricaGeophysics - seismics, Craton - Tanzanian
DS2000-0722
2000
Nyblade, A.A., Owens, T.J., Gurrola, Ritsema, LangstonSeismic evidence for a deep upper mantle thermal anomaly beneath east AfricGeology, Vol. 28, No. 7, July, pp. 599-602.Tanzania, Uganda, Kenya, East AfricaGeophysics - seismics, mantle, plume rift, Craton - Tanzanian
DS2000-0761
2000
Petit, C., Ebinger, C.Flexure and mechanical behaviour cratonic lithosphere: gravity models of East African and Baikal riftsJournal of Geophysical Research, Vol. 105, No.8, Aug. 10, pp.19151-62.Russia, East Africa, Tanzania, KenyaGeophysics - gravity, Craton
DS2001-0009
2001
Agbossoumonde, Y., Menot, R.P., Guillot, S.Metamorphic evolution of Neoproterozoic eclogites from south To go (West Africa)Journal of African Earth Sciences, Vol.33,2,Aug.pp.227-44.Togo, West AfricaEclogites, Metamorphism
DS2001-0088
2001
Barth, M.G., Rudnick, R.L., Haggerty, S.E.Geochemistry of xenolithic eclogites from West Africa: pt. 1. a link between MgO eclogites and Archean crust..Geochimica et Cosmochimica Acta, Vol. 65, No. 9, May 1, pp. 1499-West AfricaGeochemistry - eclogites
DS2001-0298
2001
Ennih, N., Ligeois, J.P.The Moroccan anti-atlas: the West Africam craton passive margin with limited Pan-African activity...Precambrian Research, Vol. 112, No. 3-4, Dec. 10, pp.289-302.West Africa, Africa, MoroccoImplications for northern limit of craton
DS2001-0712
2001
Macdonald, R., Rogers, N., Fitton, J.G., Black, SmithPlume lithosphere interactions in the generation of the basalts of the Kenya rift, east Africa.Journal of Petrology, Vol. 42, No. 5, pp. 877-900.East Africa, KenyaTectonics - plume, mantle
DS2001-0724
2001
Malunga, G.W.P., Kalindekafe, L.S.Geology and economic potential of Malawi carbonatitesJournal of South African Earth Sciences, Vol. 32, No. 1, p. A 25. (abs)MalawiCarbonatite, Chilwa Alkaline Province
DS2001-1146
2001
Tack, L., Wingate, Liegeois, FernandesAlonzo, DeblondEarly Neoproterozoic magmatism ( 1000-910 Ma) of Zadinian and Mayumbian Groups.. onset Rodinia riftingPrecambrian Research, Vol. 110, No. ER1-4, pp. 277-306.East AfricaCraton - Congo, Magmatism
DS2001-1253
2001
Woolley, A.R.Alkaline rocks and carbonatites of the World. Part 3, Africa. Descriptions by country.Geological Society of London, 370p. approx. $ 120.00Namibia, Niger, Nigeria, Rwanda, Sao Tome PrincipeCarbonatite - brief overview, description
DS2002-0008
2002
Adeoye, A.Remote sensing analysis of basement complex of southwestern Nigeria using radar imagery.16th. International Conference On Basement Tectonics '02, Abstracts, 2p., 2p.NigeriaStructure - lineaments
DM2002-1805
2002
African MiningAlgeria opens first gold mine, TirekAfrican Mining, Vol.7,2,March-April,p.30,1(2p)AlgeriaGold, Deposit - Tirek
DS2002-0105
2002
Barrat, J.A., Jambon, A., Bohn, M., Gillet, P., Sautter, V., Gopei, C., Lesourd, M.Petrology and chemistry of the picritic shergottite north west AfricaGeochimica et Cosmochimica Acta, Vol.66, 19, pp.3505-18.West AfricaPicrites
DS2002-0111
2002
Barth, M.G., Rudnick, R.L., Carlson, R.W., Horn, J., McDononough, W.F.Re Os and U Pb geochronological constraints on the eclogite tonalite connection in the Archean Man Shield, West Africa.Precambrian Research, Vol. 118, 3-4, pp. 267-83.West Africa, Liberia, Sierra LeoneGeochronology, Eclogite
DS2002-0112
2002
Barth, M.G., Rudnick, R.L., Horn, J., McDononough, W.F., Spicuzza, M.J.Geochemistry of xenolithic eclogites from West Africa: part 2. origins of the high MgO eclogites.Geochimica et Cosmochimica Acta, Vol. 66, 24, pp. 4325-45.West Africa, Liberia, Sierra LeoneEclogites
DS2002-0155
2002
Billien, M., Leveque, J.J., Artemieva, I.M., Mooney, W.D.Shear wave velocity, seismic attenuation and thermal structure of the continental lithosphere.Geological Society of America Annual Meeting Oct. 27-30, Abstract p. 263.South Africa, Russia, West AfricaGeophysics - seismics, Tectonics
DC2002-2661
2002
Champion Resources IncDiamond exploration update... heavy mineral samplingChampion Resources Inc., Feb 8, 1p.Guinea-Bissau, West AfricaNews item - press release
DS2002-0359
2002
Davis, P.M., Slack, P.D.The uppermost mantle beneath the Kenya dome and relation to melting, rifting and uplift in East Africa.Geophysical Research Letters, Vol. 29, No. 7, p. 21-East AfricaGeophysics - seismics, Tectonics
DS2002-0385
2002
Doblas, M., Lopez Ruiz, J., Cebria, J.M., Youbi, N., De Groote, E.Mantle insulation beneath the West African Craton during the Precambrian Cambrian transition.Geology, Vol. 30, 9, Sept. pp. 839-42.West AfricaGeothermometry
DS2002-0386
2002
Doblas, M., Lopez-Ruiz, J., Cebria, J-M., Youbi, N., Degroote, E.Mantle insulation beneath the West African craton during Precambrian - Cambrian transition.Geology, Vol. 30,9,Sept. pp. 839-42.West Africa, BrazilGeothermometry, African Craton
DS2002-0471
2002
Forster, J.J., Bill, J.H.Comparison of the impact of the fiscal regime on gold projects in Tanzania and Burkin a Faso.Tranactions of the Institution of Mining and Metallurgy, Section B. Applied Earth, Vol. 111, pp. B195-199.Tanzania, Burkina FasoMineral law and policy
DS2002-1165
2002
Nyblade, A.A.Crust and upper mantle structure in East Africa: implications for the origin of Cenozoic rifting and volcanism and the formation of magmatic rifted margins.Geological Society of America Special Paper, No. 362, pp. 15-26.East AfricaTectonics
DS2002-1166
2002
Nyblade, A.A.Crust and upper mantle structure in East Africa: implications for the origin of Cenozoic rifting and volcanism and the formation of magmatic rifted margins.Geological Society of America Special Paper, No. 362, pp. 15-27.East AfricaTectonics - magmatism not specific to diamonds
DS2002-1167
2002
Nyblade, A.A., Brazier, R.A.Precambrian lithospheric controls on the development of the East African rift systemGeology, Vol.30,8,Aug.pp.755-8.Africa, East AfricaTectonics
DS2002-1341
2002
Ring, U., Kroner, A., Buchwaldt, R., Toulkeridis, T., Layer, P.W.Shear zone patterns and eclogite facies metamorphism in the Mozambique belt ofPrecambrian Research, Vol. 116, No.1-2, pp. 19-56.Malawi, East AfricaMetamorphism, Tectonics
DC2002-3070
2002
Searchgold Resources IncSearch gold reactivates mining projects... preparing for bulk sampling of Mandala III alluvial diamond deposit.Searchgold Ltd., April 30, 2p.Guinea, West AfricaNews item - press release
DC2002-3071
2002
Searchgold Resources IncSearch gold finds 118 diamonds on Mandala... river alluvialsSearchGold Ltd., Sept. 19, 2p.Guinea, West AfricaNews item - press release
DS2002-1552
2002
Stern, R.J.Crustal evolution in the East African Orogen: a neodymium isotopic perspectiveJournal of African Earth Sciences, Vol.34, No.3-4,April-May pp. 109-117.Africa, East AfricaGeochronology, Tectonics
DS2002-1787
2002
Zhao, G., Cawood, P.A., Wilde, S.A., Sun, M.Review of global 2.1 - 1.8 Ga orogens: implications for a pre-Rodinia supercontinentEarth Science Reviews, Vol. 59, 1-4, Nov. pp. 125-162.Gondwana, South America, West AfricaCraton
DC2003-2232
2003
African Metals CorporationAfrican Metals announces the start of the program on the Kenieba Sud diamondAfrican Metals Corporation, Feb. 18, 1p.MaliNews item - press release
DC2003-2233
2003
African Metals CorporationAfrican Metals report initial results of program on the Kenieba Sud diamondAfrican Metals Corporation, March 25, 1p.MaliNews item - press release
DC2003-2234
2003
African Metals CorporationAfrican Metals granted initial permit on concession covering 12 kimberlite pipesAfrican Metals Corporation, Sept. 3, 1p.Mali, West AfricaNews item - press release
DM2003-1581
2003
African MiningAfrican Metals Corporation... Kieniaba SudAfrican Mining, Vol. 8, 3, Mar-Apr.exploration update 1/8p.MaliNews item, African Metals Corporation
DS2003-0141
2003
Bouougri, E.H.The Moroccan Anti-Atlas: the West African craton passive margin with limitedPrecambrian Research, Vol. 120, 1-2, pp.179-183; 185-189.Morocco, West AfricaTectonics
DS2003-0191
2003
Burke, K., Ashwal, L.D., Webb, S.J.New way to map old sutures using deformed alkaline rocks and carbonatitesGeology, Vol. 31, 5, pp. 391-4.Africa, MalawiCarbonatite - DARC, Magmatism
DS2003-0763
2003
Kusky, T.M., Abdelsalam, M., Tucker, R.D., Stern, R.J.Evolution of the East African and related orogens, and the assembly of GondwanaPrecambrian Research, Vol. 123, 2-4, pp. 81-85.Gondwana, East Africa, TanzaniaBlank
DS2003-0941
2003
Menzies, M.A., Klemperer, S.L., Ebinger, C.J., Baker, J.Volcanic rifted marginsGeological Society of America Special Paper, No. 362, 470p. $ 80. www.geosociety.org/bookstoreEast Africa, Colorado, Madagascar, Greenland, NamibiaDike swarms, volcanology, Book
DC2003-2695
2003
Searchgold Resources IncSearch gold signs a diamond marketing agreement for Mandala diamondsSearchGold Resources Inc., May 7, 1p.Guinea, West AfricaPress release, Natural Diamond Corporation
DM2003-2194
2003
Tacy LtdMalawai seeking partners for diamond exploration. Mchinji, Dzalanyama, Kirk RangeMalawi Government, Oct. 8, 1/8p.MalawiNews item
DS2003-1370
2003
Tessema, A., Antoine, L.A.G.Variation in effective elastic plate thickness of the East Africa lithosphereJournal of Geophysical Research, Vol. 108, B5, May 1, 10.1029/2002JB002200East Africa, TanzaniaCraton
DS2003-1396
2003
Turner, J.P., Rosendahl, B.R., Wilson, P.G.Structure and evolution of an obliquely sheared continental margin: Rio Muni, WestTectonophysics, Vol. 374, 1-2, pp. 41-55.West AfricaGeophysics - seismics, tectonics
DC200412-3347
2004
African Metals CorporationAfrican Metals receives government approval for preparation of permits on Kenieba Nord diamond concession.African Metals Corporation, Oct. 13, 1p.Africa, MaliNews item - press release
DC200412-3348
2003
African Metals CorporationAfrican Metals granted initial permit on concession covering 12 kimberlite pipes.African Metals Corporation, Sept. 3, 1p.Africa, MaliNews item - press release
DM200412-2247
2003
African MiningAfrican Metals Corporation... Kieniaba Sud.African Mining, Vol. 8, 3, Mar-Apr.exploration update 1/8p.Africa, MaliNews item African Metals Corporation
DS200412-0247
2003
Burke, K., Ashwal, L.D., Webb, S.J.New way to map old sutures using deformed alkalic rocks and carbonatites.Geology, Vol. 31, 5, May pp. 391-394.Africa, MalawiTectonics - Proterozoic, rifting, Pan-African Orogeny
DS200412-0566
2002
Forster, J.J., Bill, J.H.Comparison of the impact of the fiscal regime on gold projects in Tanzania and Burkin a Faso.Transactions of the Institution of Mining and Metallurgy, Section B. Applied Earth Science ( incorporating Aus, Vol. 111, pp. B195-199.Africa, Tanzania, Burkina FasoMineral law and policy
DM200412-2490
2004
Idex OnlineThe Kimberley Process has removed the Republic of Congo from the legitimate diamond trade.Idex Online, July 11, 1/8p.Africa, Republic of CongoNews item - Kimberley Process
DM200412-2525
2004
Idex OnlineKimberley Process suspends RoC mambership over diamond smuggling.Idex Online, August 15, 1.p.Africa, Republic of CongoNews item - Kimberley Process
DS200412-1072
2003
Kusky, T.M., Abdelsalam, M., Tucker, R.D., Stern, R.J.Evolution of the East African and related orogens, and the assembly of Gondwana.Precambrian Research, Vol. 123, 2-4, pp. 81-85.Gondwana, East Africa, TanzaniaTectonics
DS200412-1422
2004
Neves, S.P., Mariano, G.Heat producing elements enriched continental mantle lithosphere and Proterozoic intracontinental orogens: insights from BrasiliaGondwana Research, Vol. 7, 2, pp. 427-436.South America, Brazil, Africa, west AfricaGeothermometry, tectonics
DC200412-4052
2004
Nevsun Resources Ltd.Nevsun acquires diamond exploration rights for the Tabakoto/Segala region. Kenieba area.Nevsun Resources Ltd., Jan. 20, 1p.Africa, MaliNews item - press release, BRGM, WADE, Mali Diamond Exp
DM200412-3065
2004
Rapaport NewsDov Riger Mining Co. was granted the right to conduct initial searches for diamonds in a 2400 sq, mile area. Mokabi region of LiRapaport News, April 30, 1/8p.Africa, Republic of CongoNews item - Dov Riger
DM200412-3069
2004
Rapaport NewsWest African mine ministers meet... to streamline sustainable exploration.Rapaport News, July 9, 1/8p.Africa, Ghana, Sierra Leone, NigeriaNews item
DM200412-3100
2004
Rapaport NewsNew African mining partnership launched. Sixteen countries represented including DRC, Mali, Nigeria, Namibia.Rapaport News, Feb. 13, 1/8p.Africa, South Africa, Democratic Republic of Congo, Mali, Namibia, NigeriaNews item
DM200412-3294
2003
Tacy Ltd.Malawai seeking partners for diamond exploration. Mchinji, Dzalanyama, Kirk Range, Chikawa, Nsanje, Dwangwa and Linthipe areas.Malawi Government, Oct. 8, 1/8p.Africa, MalawiNews item
DC200512-2240
2005
African Metals CorporationIntersects 692.15 meters of kimberlite in 5 diamond drill holes.African Metals Corporation, July 13, 1p.Africa, MaliNews item - press release
DS200512-0302
2004
French, H.A.A continent for the taking..The tragedy and hope of Africa.Knopf Publisher, Approx. $US 20.00Africa, Democratic Republic Of Congo, Liberia, MaliBook - history
DM200512-1771
2004
London Mining JournalQualitative success... The KP showed its teeth by suspending the Republic of Congo.London Mining Journal, Dec. 3, p. 2.Africa, Republic of CongoNews item - legal, Kimberley Process
DC200512-2692
2005
Metalex Ventures Ltd.Exploration update Attawapiskat project, Kyle Lake project, New Liskeard project, Greenland, Mali, Morocco, Angola.Metalex Ventures Ltd., Feb. 28, 2p.Canada, Ontario, Africa, Mali, Morocco, AngolaNews item - press release
DC200512-2695
2004
Metalex Ventures Ltd.Exploration update... Attawapiskat drilling, northwestern Ontario Kyle Lake, Northwest Territories, Greenland, Morocco, Mali, Chitamba Angola.Metalex Ventures Ltd., Oct. 25, 4p.Canada, Ontario, Northwest Territories, Europe, Greenland, Africa, Morocco, Mali, AngolaNews item - press release, Arctic Star
DC200512-2734
2005
Nevsun Resources Ltd.Results from Nevsun's diamond exploration program in Mali.Nevsum Resources Ltd., July 13, 2p.Africa, MaliNews item - press release
DM200512-2123
2004
Rapaport NewsROC (Republic of Congo) hits back at DRC's Kasong.Rapaport, Dec. 3, 1/4p.Africa, Republic of CongoNews item - KP
DS200512-1138
2005
Verati, C., Bertrand, H., Fraud, G.The farthest record of the Central Atlantic Magmatic Province into West Africa craton: precise 40 Ar 39 Ar dating and geochemistry of Taoudenni basin intrusivesEarth and Planetary Science Letters, Vol. 235, 1-2, pp. 391-407.Africa, MaliMagmatism
DM200612-1935
2006
Diamonds.netDiamond nations show mixed feelings on Taylor. ( Liberian President)Diamonds.net, March 24, 1p.Africa, NigeriaNews item - conflict diamonds
DM200612-2104
2006
Diamonds.netMali: Nevsun, African Metals pool diamond concessions.Diamonds.net, July 6, 1/8p.Africa, MaliNews item - Nevsun, African Metals
DM200612-2358
2006
Intierra and Mining JournalWest Africa - mining and exploration activity. ( biased to gold but good overall coverage of activity).Mineral Information Maps, 1-100km March 2006Africa, Sierra Leone, Senegal, Guinea, Ivory Coast, MaliMap - Ghana, Burkina Faso, Togo, Benin
DS200612-0629
2005
Jackson, M.P.A., Hudec, M.R., Hegarty, K.A.The great West African Tertiary coastal uplift: fact or fiction? A perspective from the Angola Rift.Tectonics, Vol. 24, 6, TC6013. 10.1029/2005 TC1836Africa, West Africa, AngolaGeomorphology
DC200612-3153
2006
Metalex Ventures Ltd.Exploration update. T1 bulk sampling; reconnaissance sampling- Morocco; Cucumbi alluvials.Metalex Ventures Ltd., June 27, 2p.Canada, Ontario, Africa, Morocco, Mali, AngolaNews item - press release
DS200612-1571
2006
Yirgu, G., Ebinger, C.J., Maguire, P.K.H.The Afar volcanic province within the East African Rift sytem.Geological Society of London, Special Publication, No. 259, 336p. $ 200.00Africa, East AfricaMantle plume, paleomagnetism
DS200712-0242
2006
Deynoux, M., Affaton, P., Trompette, R., Villeneuve, M.Pan-African tectonic evolution and glacial events registered in Neoproterozoic to Cambrian cratonic and foreland basins of West Africa.Journal of African Earth Sciences, Vol. 46, 5, Dec. pp. 397-426.Africa, West AfricaTectonics
DS200812-0022
2008
Allialy, M.E., Djro, S.C., Yavouba, C., Konamelan, A.N., Pothin, K.B., Yao, D.B., Yobou, R.Comparative geochemistry of Seguela kimberlites, South Africa Group II kimberlites and other worldwide kimberlites.9IKC.com, 3p. extended abstractAfrica, West Africa, Ivory CoastDeposit - Bobi, Toubabouko
DS200812-0875
2008
Pein, H.Alluvial diamond exploration in tropical Africa.GSSA-SEG Meeting Held July, Johannesburg, 73 Power point slidesAfrica, West AfricaAlluvials, Pangea
DS200812-1189
2008
Turner, J.P., Green, P.F., Hoford, S.P., Lawrence, S.R.Thermal history of the Rio Muni (West Africa) - NE Brazil margins during continental breakup.Earth and Planetary Science Letters, Vol. 270, 3-4, pp. 354-367.Africa, West Africa, South America, BrazilGeothermometry
DC200912-2456
2009
Mexivada Mining CorporationMexivada starts diamond mining at Kono, Sierra Leone: larger diamond found at Lepandza, ROC Congo.Mexivada Mining Corporation, Feb. 17, 1p.Africa, Sierra Leone, Republic of CongoNews item - press release
DM201012-0923
2010
AllAfricaNigeria: survey reveals large scale diamond deposit in Katsina.AllAfrica.com, August 10, 1/2p.Africa, NigeriaNews item - exploration
DS201012-0055
2010
Bing-Pappoe, A.Reviewing Africa's peer review mechanism. A seven country survey.Partnership Africa Canada, April 6, 26p.Africa, South Africa, Burkina Faso, Ethiopia, NigeriaKenya, Ghana, Benin
DM201012-0998
2010
Business StandardIndian VP working on developing co-operation among African countries for access to their oil, gas and minerals.Business Standard - India, Jan. 12, 1p.India, Africa, Zambia, Malawi, BotswanaNews item - legal
DM201012-1931
2010
Idex OnlineLibya interested in diamond manufacturing. ( Indian expertise on Oryx diamonds).Idex Online, Sept. 13, 1/2p.Africa, Libya, Democratic Republic of CongoNews item - legal
DS201012-0395
2010
Koehm, D., Lindenfeld, M., Rumpker, G., Aanyu, K., Haines, S., Passchier, C.W., Sachu, T.Active transgression faults in rift transfer zones: evidence for complex stress fields and implications for crustal fragmentation processes in the western branchInternational Journal of Earth Sciences, Vol. 99, 7, pp. 1633-1642.Africa, East AfricaEast African Rift
DS201012-0446
2010
Linnen, R.L.Rare metal peraluminous granites: similarities and contrasts with pegmatite deposits.International Workshop Geology of Rare Metals, held Nov9-10, Victoria BC, Open file 2010-10, extended abstract pp. 33-34.Russia, China, EgyptPegmatites
DS201112-0113
2011
Bromley, D., Foltz, J.Sustainability under siege: transport costs and corruption on West Africa's trade corridors.Natural Resources Forum, Vol. 35, 1, Feb. pp. 32-48.Africa, West AfricaCSR
DM201201-0945
2011
McConachie, R., Hilson, G.Safeguarding livlihoods or exacerbating poverty? Artisanal mining and formalization in West Africa.Natural Resources Forum, Vol. 35, 4, pp. 293-303.Africa, West AfricaCSR
DS201212-0738
2012
Tugume, F., Nyblade, A., Julia, J.Moho depths and Poisson's ratios of Precambrian crust in East Africa: evidence for similarities in Archean and Proterozoic crustal structure.Earth and Planetary Science Letters, Vol. 355-356, pp. 73-81.Africa, East AfricaTectonics
DM201305-1645
2013
Rough-PolishedMali has a significant diamond potential. Bougouni, Kenieba, Adrar rough-polished.com, April 1, 1/4p.Africa, MaliNews item - brief overview
DM201311-2485
2013
AllAfricaSudan: Ministry of Minerals begins officially exploration of diamond at four states.AllAfrica.com, Oct. 2, 1/4p.Africa, SudanNews item - legal
DM201311-2638
2013
The Israeli Diamond IndustryDiamond accompanied comet millions of years ago.israelidiamonds.co.il, Oct. 9, 1/4p.Africa, EgyptMeteorite
DM201312-2655
2013
AllAfricaKimberley Process seeks to tighten flow of blood diamonds.Allafrica.com, Nov. 19, 1/4p.Africa, Zimbabwe, Republic of CongoNews item - KP
DS201312-0050
2013
Azer, M.K.Late Ediacaran ( 605-580 Ma) post-collisional alkaline magmatism in the Arabian-Nubian shield: a case study of Serbal ring-shaped intrusion, southern Sinai, Egypt.Journal of Asian Earth Sciences, Vol. 77, pp. 203-223.Africa, EgyptMagmatism - alkaline
DS201312-0087
2013
Boskabadi, A., Pitcairn, I.K., Stern, R.J., Azer, M.K., Broman, C., Mohamed, F.H., Majka, J.Carbonatite crystallization and alteration in the Tarr carbonatite-albitite complex, Sinai Peninsula, Egypt. ( Arabian-Nubian shield)Precambrian Research, Vol. 239, pp. 24-41.Africa, EgyptCarbonatite
DS201312-0090
2013
Boulvais, P., Decree, S., Cobert, C., Midende, G., Tack, L., Gardien, V., Demaiffe, D.C and O isotope compositios of the Matongo carbonatite ( Burundi): new insights into alteration and REE mineralization processes.Goldschmidt 2013, AbstractAfrica, BurundiCarbonatite
DS201312-0449
2013
Jordi, J., Nyblade, A.A.Probing the upper mantle transition zone under Africa with P520s conversions: implications for temperature and composition.Earth and Planetary Science Letters, Vol. 368, pp. 151-162.Africa, west AfricaDiscontinuity
DS201312-0513
2013
Kramers, J.D., Andreoli, M.A.G., Atanasova, M., Belyanin, G.A., Block, D.L., Franklyn, C., Harris, C., Lekgoathi, M., Montross, C.S., Ntsoane, T., Pischedda, V., Segonyane, P., Viljoen, K.S., Westraadt, J.E.Unique chemistry of a diamond bearing pebble from the Libyan desert glass strewnfield, SW Egypt: evidence for a shocked comet fragment.Earth and Planetary Science Letters, Vol.382, pp. 21-31.Africa, EgyptShock diamonds
DM201401-1045
2013
AllAfricaRussia to start mining in Sudan. CiberianAllafrica.com, Dec. 7, 1/4p.Africa, SudanNews item - Ciberian
DM201405-1067
2014
AllAfricaChad, Cameroon tightens their borders to stem flow of conflict diamonds.Allafrica.com, April 1, 1/4p.Africa, Cameroon, ChadNews item - legal
DM201411-1727
2014
London Mining JournalGold struggles as diamonds sparkle.London Mining Journal, Oct. 3, 1/2p.Africa, East AfricaNews item - Petra
DS201412-0076
2014
Broom-Fendley, S.The Songwe-Hill carbonatite, Malawi: new mapping geochemistry and U Pb dating.ima2014.co.za, PosterAfrica, MalawiCarbonatite
DM201412-1670
2014
Idex OnlineWDC offers help to African diamond producers association over ebola.Idex Online, Nov. 6, 1/4p.Africa, west africaNews item - legal
DS201412-0437
2014
Kamel, O.A., Eglal, A.New contribution to the diamond bearing REE gold silver mineralization at Kasr El-Bassel area, south El-Fayoum, Upper Egypt.30th. International Conference on Ore Potential of alkaline, kimberlite and carbonatite magmatism. Sept. 29-, Africa, EgyptDiamonds
DS201412-0575
2014
Midende, G., Boulais, P., Tack, L., Melcher, F., Gerdes,A., Dewaele, S., Demaiffe, D., Decree, S.Petrography, geochemistry and U Pb zircon age of the Matongo carbonatite Massif ( Burundi): implication for the Neoproterozoic geodynamic evolution of Central Africa.Journal of African Earth Sciences, Vol. 100, pp. 656-674.Africa, BurundiCarbonatite
DS201412-0629
2014
Nikitina, L.P., Korolev, N.M., Zinchenko, V.N., Tunga Felix, J.Eclogites from the upper mantle beneath the Kasai craton ( western Africa): petrography, whole rock geochemistry and U Pb zircon age.Precambrian Research, Vol. 249, pp. 13-32.Africa, west AfricaEclogite
DS201502-0078
2014
Midende, G., Boulvais, P., Tack, L., Melcher, F., Gerdes, A., Dewaele, S., Demaiffe, D., Decree, S.Petrography, geochemistry and U-Pb zircon age of the Matongo carbonatite Massif ( Burundi): implication for the Neoproterozoic geodynamic evolution of Central Africa.Journal of African Earth Sciences, Vol. 100, pp. 656-674.Africa, BurundiCarbonatite
DS201503-0159
2015
MacGregor, D.The Fairway concept and chance mapping: African petroleum and carbonatite examples.PDAC 2015, Abstract, 1p.Africa, East AfricaCarbonatite
DS201503-0168
2015
Pirajno, F.Intracontinental anorogenic alkaline magmatism and carbonatites, associated mineral systems and the mantle plume connection. Brandberg, Erongo, Parana-Etendeka, Kruidfontein, GoudiniGondwana Research, Vol. 27, 3, pp. 1181-1216.Africa, East Africa, Namibia, South Africa, China, AustraliaCarbonatite
DS201506-0264
2015
El-Desoky, H., Khalil, A.E., Salem, A.K.A.Ultramafic rocks in Gabal El-Rubshi, Central Eastern Desert, Egypt: petrography, mineral chemistry, and geochemistry constraints.Arabian Journal of Geosciences, Vol. 8, 5, pp.2607-2631.Africa, EgyptUltramafic rocks - general
DS201506-0274
2015
Hudgins, T.R., Mukasa, S.B., Simon, A.C., Moore, G., Barifaijo, E.Melt inclusion evidence for CO2 rich melts beneath the western branch of the East African Rift: implications for long term storage of volatiles in the deep lithospheric mantle.Contributions to Mineralogy and Petrology, Vol. 169, 5p.Africa, East AfricaBasanites, Foidites
DS201509-0403
2015
Jessell, M., Santoul, J., Baratoux, L., Youbi, N., Ernst, R.E., Metelka, V., Miller, J., Perrouty, S.An updated map of West African mafic dykes.Journal of African Earth Sciences, in press availableAfrica, West AfricaGeophysics - magnetics

Abstract: Studies of mafic dyke swarms may simultaneously provide information on the mechanical, geochemical, geochronological and magnetic environments at the time of their formation. The mafic intrusive history of different cratons can also be potentially used to unravel their assembly into their current configuration. The identification and classification of dykes is a first step to all these studies. Fortunately, even in regions with poor outcrop, we can use the strong magnetic response of mafic dykes to identify and map their extent. In West Africa the first maps of mafic dyke distribution were made over 40 years ago, but there are still large areas where there are almost no published data. In this paper we present a significantly updated map of mafic dykes for the West Africa Craton based in large part on new interpretations of the regional airborne magnetic database. This map includes the locations of over three thousand dykes across the craton, which locally shows several orientation clusters that provide a minimum estimate for the total number of dyke swarms in this region. Whilst we will have to wait until systematic dating of the different swarms is completed, we can demonstrate that there is a long and complex history of mafic magmatism across the craton, with up to 26 distinct dyke swarms mapped based according to their orientation. The mapping and dating of these swarms will provide key constraints on the assembly of the fragments that make up the modern continents.
DS201510-1767
2015
Eyike, A., Ebbing, J.Lithospheric structure of the West and Central African Rift system from regional three dimensional gravity modelling. South African Journal of Geology, Vol, 118, no. 3, pp. 285-298.Africa, East AfricaGeophysics - gravity

Abstract: A three-dimensional interpretation of the central part of the West and Central African Rift System (WCARS) is presented using the Earth Gravity Model 2008 (EGM2008). The 3-D model presented here provides new insights into the regional lithospheric structure of the central sector of the WCARS. The 3-D model reveals a possible crustal thickness and density distribution beneath the rift system, and the depth extent of magmatic activity in the Benue Trough is revealed for the first time. Because of asthenospheric uplift, the crust under the Benue Trough is thinned. The zone of crustal thinning (<30 km) coincides with the trace of an intrusion beneath the trough, and the maximum of which is attained in the Yola Basin. The Adamawa and Kapsiki Plateaus, on the other hand, show by far the largest crustal thickness in the region (34 to 36 km). The inferred zone of intrusion coincides with the maximum gravity anomaly of the rift zone. The great depth (ca. 14 km) to the top of the intrusion along the rift may explain the absence of magmatism in the Benue Trough compared to the Cameroon Volcanic Line (CVL) or the East African Rift System (EARS). The relatively small nature of the intrusion leads to the conclusion that small-scale asthenospheric upwelling might be responsible for the thinning of the crust and subsequent rifting of the Benue Trough.
DS201510-1773
2015
Jessell, M.W., Begg, G.C., Miller, M.S.The geophysical signatures of the West African Craton.Precambrian Research, in press available, 22p.Africa, West AfricaGeophysics - gravity

Abstract: This paper examines existing and newly compiled geophysical representations of the West African Craton (WAC) in terms of its large-scale tectonic architecture. In order to build an interpretation with a significant depth extent we draw upon a range of geophysical data, principally seismic tomographic inversions, receiver functions, gravity and magnetics. We present these results as a series of layers providing a series of depth slices though the cratonic lithosphere. The different geophysical methods suggest partitioning of the WAC into two tectonic elements at the largest scale which is observed in both seismic tomographic images, lithosphere-asthenosphere boundary (LAB) models and long wavelength gravity signals. The different models of the Moho, or crust-mantle boundary, based on these gravity or seismic datasets show little or no correlation, either for short or long-wavelength features, and show little correlation with new receiver function inferred crustal thickness estimates. Manual interpretation of low-wavelength gravity and magnetic data suggest a possible continuation of the WAC across the western margin of the modern boundary, and also highlight distinct domains interpreted to be of Birimian age.
DS201510-1784
2015
Markwitz, V., Hein, K.A.A., Miller, J.Compilation of West African mineral deposits: spatial distribution and mineral endowment. ( mentions diamonds)Precambrian Research, in press available, 21p.Africa, Mali, Mauritania, Senegal, Burkina Faso, Ghana, Ivory CoastMetallogeny

Abstract: The West African Craton is highly endowed in minerals, and their spatial and temporal distribution varies from single to multi-phase mineralization events. They are broadly related to three major tectono-metallogenic elements and formed during distinct mineral epochs: (1) In both Archean Shields (Kénéma-Man and Reguibat) and Paleoproterozoic domains (Baoulé-Mossi, Eglab). These are characterized by giant iron ore deposits that formed between ca. 2.5-2.3 Ga, nearly all gold, porphyry copper, lead-zinc and sedimentary manganese ore that developed between 2.2 and 2.1 Ga, and primary diamonds that formed between two intervals at ca. 2.2-2.0 Ga and in the Mesozoic. (2) Across Pan-African and Variscan belts. These are distinguished by major Precambrian IOCG's, copper-gold that formed at ca. 2.1 Ga and approximately 680 Ma, and Neoproterozoic sedimentary iron ore and phosphate deposits. (3) Within intracratonic and coastal basins. These include the development of Cenozoic lateritic bauxites over Mesozoic dolerites, Tertiary/Quaternary mineral sands deposits, oolitic iron ore and sedimentary phosphate deposits. Geological, spatial and temporal correlations using the multi-commodity West African Mineral Deposit Database highlight that gold and non-gold commodities formed in multiple phases. This commenced in the Liberian Orogeny (2.9-2.8 Ga) with the enrichment of iron ore, nickel sulphides, diamonds and gold in the earth's crust. The pre-Eburnean or Tangaean-EoEburnean-Eburnean I Event yielded gold, and the major Eburnean Orogeny yielded gold, iron ore, manganese, diamonds, magmatic nickel sulphides, copper-gold, lead-zinc, and REE minerals. Throughout the Pan-African event sedimentary manganese deposits, lead-zinc, REE minerals, sedimentary phosphates, and again gold were formed. Primary diamonds and magmatic nickel sulphides are related to the break-up of Gondwana, followed by an intense lateritic weathering period that formed bauxite deposits along the craton margin.
DS201510-1790
2015
Muirhead, J.D., Kattenhorn, S.A., Le Corvec, N.Unravelling the complexity of upper crustal dike networks in continental rifts: examples from East Africa.Geochemistry, Geophysics, Geosystems: G3, Vol. 16, in press availableAfrica, East AfricaDyke swarms

Abstract: The role of dike intrusion in driving continental breakup is fundamental to our understanding of plate tectonics. Buck (2004) showed that the breakup of thick continental lithosphere requires more than far-field tectonic forces, illustrating the important role of dike opening in driving extension during the earliest stages of rifting. Upper crustal diking in rift environments is often depicted to occur through long (up to 80 km), sub-parallel swarms intruding along the full length of rift basins. These assertions are supported by recent dike-driven rifting events in Iceland and Ethiopia (Wright et al., 2012), and inform numerical modelling studies addressing the mechanical effects of dike intrusion to rift processes (e.g., Buck et al., 2005). Our current view of dike networks, however, may be biased to evolved (>20 Ma), oceanic (e.g., Krafla) or nascent (e.g., Dabbahu-Manda-Hararo) spreading centers. This is largely because magmatic rifting occurs in these regions with a high enough frequency that it can be persistently captured using modern-day monitoring techniques (e.g., InSAR and seismicity). Dike networks throughout other sectors of the East African Rift may instead exhibit greater complexity, particularly in early-stage rifts (<10 Ma) undergoing infrequent diking episodes (Calais et al., 2008). By unravelling the contributions of dikes in these basins we can further refine our understanding of the role of magmatism during continental rift initiation. Current geophysical techniques (e.g., seismic reflection) lack the capacity to resolve thin, sub-vertical structures in the sub-surface, and thus reconstructing the geometries of cooled, upper crustal dike swarms poses a significant challenge. Recent structural and volcanological studies in both active and eroded monogenetic volcanic fields have illustrated the utility of volcanic vent alignments and cone morphometrics for inferring the distributions and orientations of upper crustal dikes (Kiyosugi et al., 2012; Le Corvec et al., 2013; Keir et al., 2015). The East African Rift exhibits numerous monogenetic cone fields that may help us understand the distribution and geometry of shallow dike-feeders emplaced in the last few million years (Korme et al., 1997; Mazzarini et al., 2013). Building on these studies and methods, we performed a comparative analysis of upper crustal diking in various rift basins throughout East Africa, based on the distributions, alignments and morphologies of monogenetic cones (Muirhead et al., 2015).
DS201511-1830
2015
Decree, S., Boulvais, P., Tack, L., Andre, L., Baele, J-M.Fluorapatite in carbonatite-related phosphate deposits: the case of the Matongo carbonatite. ( Burundi)Mineralium Deposita, in press available 14p.Africa, BurundiCarbonatite

Abstract: The Matongo carbonatite intrusive body in the Neoproterozoic Upper Ruvubu alkaline plutonic complex (URAPC) in Burundi is overlain by an economic phosphate ore deposit that is present as breccia lenses. The ore exhibits evidence of supergene enrichment but also preserves textures related to the concentration of fluorapatite in the carbonatitic system. Magmatic fluorapatite is abundant in the ore and commonly occurs as millimeter-sized aggregates. It is enriched in light rare earth elements (LREE), which is especially apparent in the final generation of magmatic fluorapatite (up to 1.32 wt% LREE2O3). After an episode of metasomatism (fenitization), which led to the formation of K-feldspar and albite, the fluorapatite-rich rocks were partly brecciated. Oxygen and carbon isotope compositions obtained on the calcite forming the breccia matrix (?18O?=?22.1?- and ?13C?=??1.5?‰) are consistent with the involvement of a fluid resulting from the mixing of magmatic-derived fluids with a metamorphic fluid originating from the country rocks. In a subsequent postmagmatic event, the carbonates hosting fluorapatite were dissolved, leading to intense brecciation of the fluorapatite-rich rocks. Secondary carbonate-fluorapatite (less enriched in LREE with 0.07-0.24 wt% LREE2O3 but locally associated with monazite) and coeval siderite constitute the matrix of these breccias. Siderite has ?18O values between 25.4 and 27.7?- and very low ?13C values (from ?12.4 to ?9.2?, which are consistent with the contribution of organic-derived low ?13C carbon from groundwater. These signatures emphasize supergene alteration. Finally, the remaining voids were filled with a LREE-poor fibrous fluorapatite (0.01 wt% LREE2O3), forming hardened phosphorite, still under supergene conditions. Pyrochlore and vanadiferous magnetite are other minerals accumulated in the eluvial horizons. As a consequence of the supergene processes and fluorapatite accumulation, the phosphate ore, which contains 0.72 to 38.01 wt% P2O5, is also enriched in LREE (LaN/YbN from 47.1 to 83.5; ?REE between 165 and 5486 ppm), Nb (up to 656 ppm), and V (up to 1232 ppm). In the case of phosphate exploitation at Matongo, REE could prove to have a subeconomic potential to be exploited as by-products of phosphates.
DS201512-1940
2015
Markwitz, V., Hein, K.A.A., Jessell, M.W., Miller, J.Metallogenic portfolio of the West African Craton. ( mentions kimberlites)Ore Geology Reviews, Oct 28 10.024Africa, West AfricaReguibat shield, Kenema-Man shield

Abstract: The West African Craton hosts major resources of gold, iron ore, aluminium ore, diamonds, phosphates and manganese. This portfolio of ore deposits is linked to the formation of Archean -Paleoproterozoic greenstone belts, Jurassic rifting and extended periods of Mesozoic to Cenozoic weathering and erosion. We give a brief overview of the temporal and spatial distribution patterns of West African ore deposits with emphasis on the main commodity types. The oldest ore forming processes generated major resources in iron ore and gold in the Kénéma -Man and Reguibat Shields during the Neo-Archean. The majority of gold, porphyry copper, lead -zinc and sedimentary manganese deposits formed during the Paleoproterozoic, dominantly within the Baoulé-Mossi domain. At the same time diamond-bearing kimberlites developed in Ghana. Another distinct diamond event has been recognized in the Mesozoic of the Kénéma -Man shield. Isolated occurrences of IOCG's as well as copper -gold and gold formed in Pan-African/Variscan belts. During the Neoproterozoic, the majority of mineralization consists of sedimentary iron ore and phosphate deposits located within intracratonic basins. During the Phanerozoic aluminium ore, phosphates and mineral sands concentrated along the margins of the coastal and intracratonic basins.
DS201601-0013
2015
Decree, S., Boulvais, P., Tack, L., Andre, L., Baele, J-M.Fluorapatite in carbonatite related phosphate deposits: the case for the Matongo carbonatite ( Burundi).Mineralogy and Petrology, in press available, 17p.Africa, BurundiCarbonatite

Abstract: The Matongo carbonatite intrusive body in the Neoproterozoic Upper Ruvubu alkaline plutonic complex (URAPC) in Burundi is overlain by an economic phosphate ore deposit that is present as breccia lenses. The ore exhibits evidence of supergene enrichment but also preserves textures related to the concentration of fluorapatite in the carbonatitic system. Magmatic fluorapatite is abundant in the ore and commonly occurs as millimeter-sized aggregates. It is enriched in light rare earth elements (LREE), which is especially apparent in the final generation of magmatic fluorapatite (up to 1.32 wt% LREE2O3). After an episode of metasomatism (fenitization), which led to the formation of K-feldspar and albite, the fluorapatite-rich rocks were partly brecciated. Oxygen and carbon isotope compositions obtained on the calcite forming the breccia matrix (?18O?=?22.1?‰ and ?13C?=??1.5?‰) are consistent with the involvement of a fluid resulting from the mixing of magmatic-derived fluids with a metamorphic fluid originating from the country rocks. In a subsequent postmagmatic event, the carbonates hosting fluorapatite were dissolved, leading to intense brecciation of the fluorapatite-rich rocks. Secondary carbonate-fluorapatite (less enriched in LREE with 0.07-0.24 wt% LREE2O3 but locally associated with monazite) and coeval siderite constitute the matrix of these breccias. Siderite has ?18O values between 25.4 and 27.7?‰ and very low ?13C values (from ?12.4 to ?9.2?‰), which are consistent with the contribution of organic-derived low ?13C carbon from groundwater. These signatures emphasize supergene alteration. Finally, the remaining voids were filled with a LREE-poor fibrous fluorapatite (0.01 wt% LREE2O3), forming hardened phosphorite, still under supergene conditions. Pyrochlore and vanadiferous magnetite are other minerals accumulated in the eluvial horizons. As a consequence of the supergene processes and fluorapatite accumulation, the phosphate ore, which contains 0.72 to 38.01 wt% P2O5, is also enriched in LREE (LaN/YbN from 47.1 to 83.5; ?REE between 165 and 5486 ppm), Nb (up to 656 ppm), and V (up to 1232 ppm). In the case of phosphate exploitation at Matongo, REE could prove to have a subeconomic potential to be exploited as by-products of phosphates.
DS201603-0401
2016
Montero, P., Haissen, F., Mouttaqi, A., Molina, J.F., Errami, A., Sadki, O., Cambeses, A., Bea, F.Contrasting SHRIMP U-Pb zircon ages of two carbonatite complexes from the peri-cratonic terranes of the Reguibat shield: implications for the lateral extension of the West African Craton.Gondwana Research, in press available 13p.Africa, West AfricaCarbonatite

Abstract: The Oulad Dlim Massif of the Western Reguibat Shield contains several carbonatite complexes of previously unknown age. The largest and best studied are Gleibat Lafhouda, composed of magnesiocarbonatites, and Twihinate, composed of calciocarbonatites. Gleibat Lafhouda is hosted by Archean gneisses and schists. It has a SHRIMP U-Th-Pb zircon crystallization age of 1.85 ± 0.03 Ga, a Nd model age of TCR = 1.89 ± 0.03 Ga, and a Sm-Nd age of 1.85 ± 0.39 Ga. It forms part of the West Reguibat Alkaline province. Twihinate, on the other hand, is much younger. It is hosted by Late Silurian to Early Devonian deformed granites and has a zircon crystallization age of 104 ± 4 Ma, which is within error of the age of the carbonatites of the famous Richat Structure in the southwest Reguibat Shield. Like these, the Twihinate carbonatites are part of the Mid-Cretaceous Peri-Atlantic Alkaline Pulse. The Twihinate carbonatites contain abundant inherited zircons with ages that peak at ca. 420 Ma, 620 Ma, 2050 Ma, 2466 Ma, and 2830 Ma. This indicates that their substratum has West African rather than, as previously suggested, Avalonian affinities. It has, however, a Paleoproterozoic component that is not found in the neighboring western Reguibat Shield. The 421 Ma to 410 Ma gneissic granites hosting Twihinate are epidote + biotite + Ca-rich garnet deformed I-type to A-type granites derived from magmas of deep origin compatible, therefore, with being generated in a subduction environment. These granites form a body of unknown dimensions and petrogenesis, the study of which will be of key importance for understanding the geology and crustal architecture of this region.
DS201604-0595
2016
Broom-Fendley, S., Styles, M.T., Appleton, J.D., Gunn, G., Wall, F.Evidence for dissolution reprecipitation of apatite and preferential LREE mobility in carbonatite derived late stage hydrothermal processes.American Mineralogist, Vol. 101, pp. 596-611.Africa, MalawiCarbonatite

Abstract: The Tundulu and Kangankunde carbonatite complexes in the Chilwa Alkaline Province, Malawi, contain late-stage, apatite-rich lithologies termed quartz-apatite rocks. Apatite in these rocks can reach up to 90 modal% and displays a distinctive texture of turbid cores and euhedral rims. Previous studies of the paragenesis and rare earth element (REE) content of the apatite suggest that heavy REE (HREE)-enrichment occurred during the late-stages of crystallization. This is a highly unusual occurrence in intrusions that are otherwise light REE (LREE) enriched. In this contribution, the paragenesis and formation of the quartz-apatite rocks from each intrusion is investigated and re-evaluated, supported by new electron microprobe (EPMA) and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) data to better understand the mechanism of HREE enrichment. In contrast to the previous work at Tundulu, we recognize three separate stages of apatite formation, comprising an “original” euhedral apatite, “turbid” apatite, and “overgrowths” of euhedral late apatite. The crystallization of synchysite-(Ce) is interpreted to have occurred subsequent to all phases of apatite crystallization. The REE concentrations and distributions in the different minerals vary, but generally higher REE contents are found in later-stage apatite generations. These generations are also more LREE-enriched, relative to apatite that formed earlier. A similar pattern of increasing LREE-enrichment and increased REE concentrations toward later stages of the paragenetic sequence is observed at Kangankunde, where two generations of apatite are observed, the second showing higher REE concentrations, and relatively higher LREE contents. The changing REE distribution in the apatite, from early to late in the paragenetic sequence, is interpreted to be caused by a combination of dissolution-reprecipitation of the original apatite and the preferential transport of the LREE complexes by F- and Cl-bearing hydrothermal fluids. Successive pulses of these fluids transport the LREE out of the original apatite, preferentially re-precipitating it on the rim. Some LREE remained in solution, precipitating later in the paragenetic sequence, as synchysite-(Ce). The presence of F is supported by the F content of the apatites, and presence of REE-fluorcarbonates. Cl is not detected in the apatite structure, but the role of Cl is suggested from comparison with apatite dissolution experiments, where CaCl2 or NaCl cause the reprecipitation of apatite without associated monazite. This study implies that, despite the typically LREE enriched nature of carbonatites, significant degrees of hydrothermal alteration can lead to certain phases becoming residually enriched in the HREE. Although at Tundulu the LREE-bearing products are re-precipitated relatively close to the REE source, it is possible that extensive hydrothermal activity in other carbonatite complexes could lead to significant, late-stage fractionation of the REE and the formation of HREE minerals.
DS201605-0845
2016
Hein, K.A.A.West African mineral atlas monograph.Ore Geology Reviews, in press available outline 5p.Africa, West AfricaBook - Atlas
DS201607-1379
2016
Smit, K.Preservation of C centres in Ib diamonds due to rapid tectonic exhumation following Gondwana assembly: Re-)s age constraints of West African diamonds.IGC 35th., Session The Deep Earth 1 p. abstractAfrica, West AfricaDiamond inclusions
DC201607-2700
2016
Stellar Diamonds plc.Shareholder loan facility.Stellar Diamonds plc, June 13, 1p.Africa, West AfricaNews item - press release
DM201608-2584
2016
AllafricaIndian businessmen express desire to invest in diamonds ( iron and copper too).Allafrica.com, Aug. 12, 1/4p.Africa, SudanNews item - legal
DS201608-1422
2016
Markwitz, V., Hein, K.A.A., Jessell, M.W., Miller, J.Metallogenic portfolio of the West Africa craton. Mentions diamonds in Ghana, Mali and GuineaOre Geology Reviews, Vol. 78, pp. 558-563.Africa, Ghana, Mali, GuineaAlluvials
DS201609-1707
2016
Broom-Fendley, S., Heaton, T., Wall, F., Gunn, G.Tracing the fluid source of heavy REE mineralization in carbonatites using a novel method of oxygen isotope analysis in apatite: the example of Songwe Hill, Malawi.Chemical Geology, Vol. 440, pp. 275-287.Africa, MalawiCarbonatite

Abstract: Stable (C and O) isotope data from carbonates are one of the most important methods used to infer genetic processes in carbonatites. However despite their ubiquitous use in geological studies, it is suspected that carbonates are susceptible to dissolution-reprecipitation and isotopic resetting, especially in shallow intrusions, and may not be the best records of either igneous or hydrothermal processes. Apatite, however, should be much less susceptible to these resetting problems but has not been used for O isotope analysis. In this contribution, a novel bulk-carbonatite method for the analysis of O isotopes in the apatite PO4 site demonstrates a more robust record of stable isotope values. Analyses of apatite from five carbonatites with magmatic textures establishes a preliminary Primary Igneous Apatite (PIA) field of ?18O = + 2.5 to + 6.0‰ (VSMOW), comparable to Primary Igneous Carbonatite (PIC) compositions from carbonates. Carbonate and apatite stable isotope data are compared in 10 carbonatite samples from Songwe Hill, Malawi. Apatite is heavy rare earth element (HREE) enriched at Songwe and, therefore, oxygen isotope analyses of this mineral are ideal for understanding HREE-related mineralisation in carbonatites. Carbonate C and O isotope ratios show a general trend, from early to late in the evolution, towards higher ?18O values (+ 7.8 to + 26.7‰, VSMOW), with a slight increase in ?13C (? 4.6 to ? 0.1‰, VPDB). Oxygen isotope ratios from apatite show a contrary trend, decreasing from a PIA field towards more negative values (+ 2.5 to ? 0.7‰, VSMOW). The contrasting results are interpreted as the product of the different minerals recording fluid interaction at different temperatures and compositions. Modelling indicates the possibility of both a CO2 rich fluid and mixing between meteoric and deuteric waters. A model is proposed where brecciation leads to depressurisation and rapid apatite precipitation. Subsequently, a convection cell develops from a carbonatite, interacting with surrounding meteoric water. REE are likely to be transported in this convection cell and precipitate owing to decreasing salinity and/or temperature.
DS201610-1851
2010
Chirico, P.G., Barthelemy, F., Kone, F.Alluvial diamond resource potential and production capacity assessment of Mali.U.S. Geological Survey, Report 2010-5044, 23p.Africa, MaliAlluvials, resources

Abstract: South Africa, and attended by representatives of the diamond industry and leaders of African governments to develop a certification process intended to assure that rough, exported diamonds were free of conflictual concerns. This meeting was supported later in 2000 by the United Nations in a resolution adopted by the General Assembly. By 2002, the Kimberley Process Certification Scheme (KPCS) was ratified and signed by diamond-producing and diamond-importing countries. Over 70 countries were included as members of the KPCS at the end of 2007. To prevent trade in "conflict diamonds" while protecting legitimate trade, the KPCS requires that each country set up an internal system of controls to prevent conflict diamonds from entering any imported or exported shipments of rough diamonds. Every diamond or diamond shipment must be accompanied by a Kimberley Process (KP) certificate and be contained in tamper-proof packaging. The objective of this study was (1) to assess the naturally occurring endowment of diamonds in Mali (potential resources) based on geological evidence, previous studies, and recent field data and (2) to assess the diamond-production capacity and measure the intensity of mining activity. Several possible methods can be used to estimate the potential diamond resource. However, because there is generally a lack of sufficient and consistent data recording all diamond mining in Mali and because time to conduct fieldwork and accessibility to the diamond mining areas are limited, four different methodologies were used: the cylindrical calculation of the primary kimberlitic deposits, the surface area methodology, the volume and grade approach, and the content per kilometer approach. Approximately 700,000 carats are estimated to be in the alluvial deposits of the Kenieba region, with 540,000 carats calculated to lie within the concentration grade deposits. Additionally, 580,000 carats are estimated to have been released from the primary kimberlites in the region. Therefore, the total estimated diamond resources in the Kenieba region are thought to be nearly 1,300,000 carats. The Bougouni zones are estimated to have 1,000,000 carats with more than half, 630,000 carats, contained in concentrated deposits. When combined, the Kenieba and Bougouni regions of Mali are estimated to be host to 2,300,000 carats of diamonds.
DM201610-2012
2016
Rough-polishedBurkin a Faso to apply for KP membership.rough-polished.com, Sept. 9, 1/4p.Africa, Burkina FasoNews item - KP
DS201610-1905
2016
Smit, K.V., Shirey, S.B., Wang, W.Type 1b diamond formation and preservation in the West African lithospheric mantle: Re-Os age constraints from sulphide inclusions in Zimmi diamonds.Precambrian Research, in press available, 48p.Africa, West Africa, Sierra LeoneDeposit - Zimmi
DS201701-0004
2016
Broom-Fendley, S., Brady, A.E., Wall, F., Gunn, G., Dawes, W.REE minerals at the Songwe Hill carbonatite, Malawi: HREE enrichment in late stage apatite.Ore Geology Reviews, Vol. 81, pp. 23-41.Africa, MalawiCarbonatite

Abstract: Compared to all published data from carbonatites and granitoids, the fluorapatite compositions in the Songwe Hill carbonatite, determined by EPMA and LA ICP-MS, have the highest heavy (H)REE concentration of any carbonatite apatite described so far. A combination of this fluorapatite and the REE fluorocarbonates, synchysite-(Ce) and parisite-(Ce), which are the other principal REE bearing minerals at Songwe, gives a REE deposit with a high proportion of Nd and a higher proportion of HREE (Eu-Lu including Y) than most other carbonatites. Since Nd and HREE are currently the most sought REE for commercial applications, the conditions that give rise to this REE profile are particularly important to understand. Multiple apatite crystallisation stages have been differentiated texturally and geochemically at Songwe and fluorapatite is divided into five different types (Ap-0-4). While Ap-0 and Ap-1 are typical of apatite found in fenite and calcite-carbonatite, Ap-2, -3 and -4 are texturally atypical of apatite from carbonatite and are progressively HREE-enriched in later paragenetic stages. Ap-3 and Ap-4 exhibit anhedral, stringer-like textures and their REE distributions display an Y anomaly. These features attest to formation in a hydrothermal environment and fluid inclusion homogenisation temperatures indicate crystallisation occurred between 200-350 °C. Ap-3 crystallisation is succeeded by a light (L)REE mineral assemblage of synchysite-(Ce), strontianite and baryte. Finally, late-stage Ap-4 is associated with minor xenotime-(Y) mineralisation and HREE-enriched fluorite. Fluid inclusions in the fluorite constrain the minimum HREE mineralisation temperature to approximately 160 °C. A model is suggested where sub-solidus, carbonatite-derived, (carbo)-hydrothermal fluids remobilise and fractionate the REE. Chloride or fluoride complexes retain LREE in solution while rapid precipitation of apatite, owing to its low solubility, leads to destabilisation of HREE complexes and substitution into the apatite structure. The LREE are retained in solution, subsequently forming synchysite-(Ce). This model will be applicable to help guide exploration in other carbonatite complexes.
DM201705-0900
2017
Creamers Mining WeeklyDespite its 2% share of WOD's revenue, Russial group says Africa's significance cannot be underestimated. World of Diamonds marketing group.Creamers Mining Weekly, April 7, 1/4p.Africa, Mali, Democratic Republic of CongoNews item - WOD
DS201707-1310
2017
Broom-Fendley, S., Brady, A.E., Horstwood, M.S.A., Woolley, A.R., Mtegha, J., Wall, F., Dawes, W., Gunn, G.Geology, geochemistry and geochronology of the Songwe Hill carbonatite, Malawi.Journal of African Earth Sciences, Vol. 134, pp. 10-23.Africa, Malawicarbonatite - Songwe Hill

Abstract: Songwe Hill, Malawi, is one of the least studied carbonatites but has now become particularly important as it hosts a relatively large rare earth deposit. The results of new mapping, petrography, geochemistry and geochronology indicate that the 0.8 km diameter Songwe Hill is distinct from the other Chilwa Alkaline Province carbonatites in that it intruded the side of the much larger (4 x 6 km) and slightly older (134.6 ± 4.4 Ma) Mauze nepheline syenite and then evolved through three different carbonatite compositions (C1–C3). Early C1 carbonatite is scarce and is composed of medium–coarse-grained calcite carbonatite containing zircons with a U–Pb age of 132.9 ± 6.7 Ma. It is similar to magmatic carbonatite in other carbonatite complexes at Chilwa Island and Tundulu in the Chilwa Alkaline Province and others worldwide. The fine-grained calcite carbonatite (C2) is the most abundant stage at Songwe Hill, followed by a more REE- and Sr-rich ferroan calcite carbonatite (C3). Both stages C2 and C3 display evidence of extensive (carbo)-hydrothermal overprinting that has produced apatite enriched in HREE (<2000 ppm Y) and, in C3, synchysite-(Ce). The final stages comprise HREE-rich apatite fluorite veins and Mn-Fe-rich veins. Widespread brecciation and incorporation of fenite into carbonatite, brittle fracturing, rounded clasts and a fenite carapace at the top of the hill indicate a shallow level of emplacement into the crust. This shallow intrusion level acted as a reservoir for multiple stages of carbonatite-derived fluid and HREE-enriched apatite mineralisation as well as LREE-enriched synchysite-(Ce). The close proximity and similar age of the large Mauze nepheline syenite suggests it may have acted as a heat source driving a hydrothermal system that has differentiated Songwe Hill from other Chilwa carbonatites.
DS201709-2070
2017
Wall., F., Al Ali, S., Rollinson, G., Fitzpatrick, R., Dawes, W., Broom-Fendley, S.Geochemistry and mineralogy of rare earth processing.Goldschmidt Conference, abstract 1p.Africa, Malawicarbonatite - Songwe Hill

Abstract: The geochemistry and mineralogy of REE deposits is diverse, from carbonatite-related deposits, alkaline rocks, mineral sands and ion adsorption clays to potential by-products of phosphate and bauxite, and reuse of waste materials. Despite the large number of prospects that have been explored recently, very little additional REE production has started. A major challenge is to design effective, cost-efficient and environmentally-friendly processing and extraction. Processing flow sheets have to be constructed carefully for each deposit. Translating geochemistry and mineralogy studies, including quantitative mineralogy results, into processing characteristics can be illustrated using results from the Songwe Hill carbonatite, Malawi. Combining results with other published data then allows us to make some general conclusions about the common REE ore minerals and their geological environment, including the REE fluorcarbonate series, monazite and xenotime. The use of chemicals for REE extraction is often the largest environmental burden to mitigate. A new issue is that certain REE, such as Ce, are in oversupply, and are not being recovered in some proposed processing flowsheets. It will be important to understand the environmental and commercial implications of this development.
DS201710-2239
2017
Li, W-Y., Huang, F., Yu, H-M., Xu, J., Halama, R., Teng, F-Z.Barium isotopic composition of the mantle constrained by carbonatites.Goldschmidt Conference, 1p. AbstractAfrica, Tanzania, east Africa, Canada, Europe, Germany, Greenlandcarbonatite

Abstract: Deep mantle origin and ultra-reducing conditions in podiform chromitite: diamonds, moissanite, and other unusual minerals in podiform chromitites from the Pozanti-Karsanti ophiolite, southern Turkey
DS201712-2667
2018
Abdelsalam, G., Atekwana, E., Elsenbeck, J., Jones, A.G., Chikambwe, E.Imaging Precambrian lithospheric structure in Zambia using electromagnetic methods.Gondwana Research, Vol. 54, pp. 38-49.Africa, Zambia, Malawigeophysics

Abstract: The Precambrian geology of eastern Zambia and Malawi is highly complex due to multiple episodes of rifting and collision, particularly during the formation of Greater Gondwana as a product of the Neoproterozoic Pan-African Orogeny. The lithospheric structure and extent of known Precambrian tectonic entities of the region are poorly known as there have been to date few detailed geophysical studies to probe them. Herein, we present results from electromagnetic lithospheric imaging across Zambia into southern Malawi using the magnetotelluric method complemented by high-resolution aeromagnetic data of the upper crust in order to explore the extent and geometry of Precambrian structures in the region. We focus particularly on determining the extent of subcontinental lithospheric mantle (SCLM) beneath the Archean-Paleoproterozoic cratonic Bangweulu Block and the Mesoproterozoic-Neoproterozoic Irumide and Southern Irumide Orogenic Belts. We also focus on imaging the boundaries between these tectonic entities, particularly the boundary between the Irumide and Southern Irumide Belts. The thickest and most resistive lithosphere is found beneath the Bangweulu Block, as anticipated for stable cratonic lithosphere. Whereas the lithospheric thickness estimates beneath the Irumide Belt match those determined for other orogenic belts, the Southern Irumide Belt lithosphere is substantially thicker similar to that of the Bangweulu Block to the north. We interpret the thicker lithosphere beneath the Southern Irumide Belt as due to preservation of a cratonic nucleus (the pre-Mesoproterozoic Niassa Craton). A conductive mantle discontinuity is observed between the Irumide and Southern Irumide Belts directly beneath the Mwembeshi Shear Zone. We interpret this discontinuity as modified SCLM relating to a major suture zone. The lithospheric geometries determined from our study reveal tectonic features inferred from surficial studies and provide important details for the tectonothermal history of the region.
DS201712-2676
2017
Broom-Fendley, S., Wall, F., Spiro, B., Ullmann, C.V.Deducing the source and composition of rare earth mineralising fluids in carbonatites: insights from isotopic ( C,O,87Sr/86SR) dat a from Kangankunde, Malawi.Contributions to Mineralogy and Petrology, Vol. 172, 96Africa, Malawicarbonatite

Abstract: Carbonatites host some of the largest and highest grade rare earth element (REE) deposits but the composition and source of their REE-mineralising fluids remains enigmatic. Using C, O and 87Sr/86Sr isotope data together with major and trace element compositions for the REE-rich Kangankunde carbonatite (Malawi), we show that the commonly observed, dark brown, Fe-rich carbonatite that hosts REE minerals in many carbonatites is decoupled from the REE mineral assemblage. REE-rich ferroan dolomite carbonatites, containing 8-15 wt% REE2O3, comprise assemblages of monazite-(Ce), strontianite and baryte forming hexagonal pseudomorphs after probable burbankite. The 87Sr/86Sr values (0.70302-0.70307) affirm a carbonatitic origin for these pseudomorph-forming fluids. Carbon and oxygen isotope ratios of strontianite, representing the REE mineral assemblage, indicate equilibrium between these assemblages and a carbonatite-derived, deuteric fluid between 250 and 400 °C (?18O + 3 to + 5‰VSMOW and ?13C ? 3.5 to ? 3.2‰VPDB). In contrast, dolomite in the same samples has similar ?13C values but much higher ?18O, corresponding to increasing degrees of exchange with low-temperature fluids (< 125 °C), causing exsolution of Fe oxides resulting in the dark colour of these rocks. REE-rich quartz rocks, which occur outside of the intrusion, have similar ?18O and 87Sr/86Sr to those of the main complex, indicating both are carbonatite-derived and, locally, REE mineralisation can extend up to 1.5 km away from the intrusion. Early, REE-poor apatite-bearing dolomite carbonatite (beforsite: ?18O + 7.7 to + 10.3‰ and ?13C ?5.2 to ?6.0‰; 87Sr/86Sr 0.70296-0.70298) is not directly linked with the REE mineralisation.
DS201801-0012
2017
Duraiswami, R.A.Textural evidences of late stage carbonate dissolution precipitation and stable isotope exchange re-equilibration in the Kangankunde carbonatite complex, Malawi.Carbonatite-alkaline rocks and associated mineral deposits , Dec. 8-11, abstract p. 39-40.Africa, Malawideposit - Kangankunde

Abstract: The Kangankunde carbonatite complex, southern Malawi is an eroded remnant of a carbonatite depocentre belonging to the Lower Cretaceous Chilwa Alkaline Province (Garson and Campbell-Smith, 1965; Karmalkar et al., 2010). The carbonatite complex consists of fenites, carbonated agglomeratic breccias and ankeritic-ferron dolomite carbonatite with sporadic patches of REE minerals. Coarse pegmatitic siderite and ankeritic carbonatite hosts exotic cavities and vugs that contain RE minerals like monazite, synchysite, bastnasite, and florencite-goyazite along with barite and strontianite. Bright green monazite occurs with thick quartz veins and as disseminations within host carbonatites (Garson and Campbell-Smith, 1965; Holt, 1965). Texturally, the host carbonatite exhibits euhedral to subhedral rhombohedra of ankerite-calcite and dolomite set in a fine groundmass. However samples close to mineralized zones show streaky textures, streaming effects and patterns that resemble remobilization and fluidization. Textural evidences such as presence of pseudomorphs containing the REE mineral assemblage, veinlets and drusy cavities indicate that REE mineralization replaced earlier formed carbonates (Wall et al. 1994). SEM micromorphology of such carbonatites show several dissolution-precipitation features indicating that there was a pervasive fluid interaction with the host subsequent to cooling and crystallization. Within cavities and vugs, the precipitation is closely associated with monazite veins and formation of minerals like collinsite, synchysite and rare aragonite (Duraiswami and Shaikh, 2010). Carbon and oxygen isotope ratios were determined on 8 bulk carbonatite powders from Kangankunde using Thermo Fisher Scientific GasBench II, equipped with autosampler (CTC Analytics AG, Zwingen, Switzerland), and coupled to a Delta Plus XP Mass Spectrometer at NGRI, Hyderabad. International Standards NBS-19-1 and NBS-18-1 plus internal standards were used. The internal precision (1s) measured for raw d18O and d13C was 0.04–0.08‰ and 0.03 to 0.06 respectively. The ?13C VS V-PDB show restricted range (-0.31 to -2.76) but ?18O VS V-SMOW values vary widely (8.22 to 24.5). The samples analysed in the present study plot outside the Primary Igneous Carbonatite field (Demény et al., 2004) and are related either to carbo-hydrothermal fluids or alteration of dolomite by a later, cooling, deuteric fluid (Fendley et al., 2017). This study provides conclusive textural evidences (pseudomorphic replacements, atolls, iron-oxide exsolution fringes from dolomite/ankerite, coloform banding, secondary veinlets, etc.) to supports geochemical and stable isotopic inferences about the role of late stage hydrothermal fluids and subsequent alterations in the Kangankunde carbonatite complex (Wall and Mariano, 1996, Wall et al., 1994, Doroshkevich et al., 2009, Fendley et al., 2017).
DS201801-0048
2017
Polak, L., Ackerman, L., Rapprich, V., Magna, T.Platinum group element and rhenium osmium geochemistry of selected carbonatites from India, USA and East africa.Carbonatite-alkaline rocks and associated mineral deposits , Dec. 8-11, abstract p. 22-23.India, United States, Africa, East Africacarbonatites

Abstract: Carbonatites and associated alkaline silicate rocks might have potential economic impact for a large variety of metals such as Cu, Ni, Fe and platinum-group elements (PGE - Os, Ir, Ru, Pd, Pt) as it is demonstrated in South Africa (Phalaborwa; Taylor et al. 2009) or Brazil (Ipanema; Fontana 2006). In addition, determined PGE contents along with Re-Os isotopic compositions may also provide important information about PGE fractionation during the genesis of upper mantle-derived carbonatitic melts and nature of their sources. Nevertheless, the existing PGE data for carbonatites are extremely rare, limited mostly to Chinese localities and they are not paralleled by Re-Os isotopic data (Xu et al. 2008). Therefore, in this study, we present the first complete PGE datasets together with Re-Os determinations for a suite of selected carbonatite bodies worldwide. We have chosen eight carbonatite sites with different alkaline rock association, age and geotectonic position. Among these, the youngest samples are from East African rift system and include Oldoinyo Dili, Tanzania with an age spanning from ~0 to 45 Ma; same as Tororo and Sukulu in Uganda (Woolley and Kjarsgaard 2008). These carbonatites are in association with pyroxenites and nepheline syenites. Another young carbonatitic complex is Amba Dongar in west India with Cretaceous age of ~65 Ma associated with alkaline volcanic rocks such as trachybasalts within Deccan Traps (Sukheswala and Udas 1963). Proterozoic bodies are represented by Iron Hill, USA carbonatites associated with pyroxenite, melitolite and ijolite with age ranging from ~520 to 580 Ma (Nash 1972). These carbonatites are famous for their intensive and varied fenitization. Last and the oldest carbonatites in this study comes from Samalpatti and Sevattur, South India having the age of ~800 Ma (Schleicher et al. 1997) and outcropping as small bodies within alkaline rocks such as pyroxenite, syenite and gabbro. The PGE concentrations and Re-Os isotopic ratios were determined by standard methods consisting of decarbonatization using HCl, decomposition of samples in Carius Tubes in the presence of reverse aqua regia and spikes (isotopic dilution), separation of Os by CHCl3 followed by N-TIMS measurements and Ir, Ru, Pd, Pt, Re isolation by anion exchange chromatography followed by ICP-MS measurements. All analysed carbonatites exhibit extremely low PGE contents (? PGE up to 1 ppb), even in the samples with high S contents (up to 1.5 wt. %). Such values are much lower than other determined so far for upper mantle-derived melts such as basalts, komatiites, etc. (Day et al. 2016). Such signatures indicate very low partitioning of PGE into carbonatitic melts and/or early separation of PGE-bearing fraction. Elements from iridium-group I-PGE; Os, Ir and Ru; mostly < 0.1 ppb) are distinctly lower compared to palladiumgroup elements and Re (PPGE; Pt, Pd, Re; mostly > 0.1 ppb) with some rocks being largely enriched in Re (up to ~6 ppb). Most of the analysed carbonatites exhibit progressive enrichment from Os to Re and consequently, PdN/ReN < 0.1 except south India carbonatites and associated alkaline rocks (> 0.30). Rocks analysed so far for Os have OsN/IrN up to 6.2 that might suggest that the carbonatites might concentrate Os over Ir. The highest HSEtot contents have been found in Mg-Cr-rich silicocarbonatites from South India (up to 40 ppb) and taking into account their only slightly radiogenic 187Os/188Os ratios (0.14-0.57), these rocks represents mixture of CO2-rich alkaline mantle melts and country rocks. Very high concentrations of HSE have been also found in magnetite separated from Fe-carbonatite from Amba Dongar, India (0.2-0.5 ppb of I-PGE and 0.9-9 ppb of P-PGE). The 187Os/188Os ratios determined so far for carbonatites from South India vary from 0.24 to 6.5 and calculated ?Os values range from +100 up to +5000. Such wide range of values suggest extremely heterogenous source of the melts and/or possible contamination by 187Os-rich crustal materials.
DM201802-0318
2018
Diamonds.netOut of this world studded rock just got even weirder. Hypatia stonelivescience.com, Jan. 11, 1/2p.Africa, EgyptNews item - Hypatia
DS201802-0231
2017
Dowman, E., Wall, F., Treloar, P.J., Rankin, A.H.Rare earth mobility as a result of multiple phases of fluid activity in fenite around the Chilwa Island carbonatite, Malawi.Mineralogical Magazine, Vol. 81, 6, pp. 1367-1395.Africa, Malawicarbonatite - Chilwa

Abstract: Carbonatites are enriched in critical raw materials such as the rare earth elements (REE), niobium, fluorspar and phosphate. A better understanding of their fluid regimes will improve our knowledge of how to target and exploit economic deposits. This study shows that multiple fluid phases penetrated the surrounding fenite aureole during carbonatite emplacement at Chilwa Island, Malawi. The first alkaline fluids formed the main fenite assemblage and later microscopic vein networks contain the minerals of potential economic interest such as pyrochlore in high-grade fenite and RE minerals throughout the aureole. Seventeen samples of fenite rock from the metasomatic aureole around the Chilwa Island carbonatite complex were chosen for study (Natural History Museum, London collection BM1968 P37). In addition to the main fenite assemblage of feldspar and aegirine ± arfvedsonite, riebeckite and richterite, the fenite contains micro-mineral assemblages including apatite, ilmenite, rutile, magnetite, zircon, RE minerals and pyrochlore in vein networks. Petrography using SEM-EDX showed that the RE minerals (monazite, bastnäsite and parisite) formed later than the fenite feldspar, aegirine and apatite and provide evidence of REE mobility into all grades of fenite. Fenite apatite has a distinct negative Eu anomaly (determined by LA-ICP-MS) that is rare in carbonatite-associated rocks and interpreted as related to pre-crystallisation of plagioclase and co-crystallisation with K-feldspar in the fenite. The fenite minerals have consistently higher mid REE/light REE ratios (La/Sm = ~1.3 monazite, ~1.9 bastnäsite, ~1.2 parisite) than their counterparts in the carbonatites (La/Sm = ~2.5 monazite, ~4.2 bastnäsite, ~3.4 parisite). Quartz in the low- and medium-grade fenite hosts fluid inclusions, typically a few µm in diameter, secondary and extremely heterogeneous. Single phase, 2- and 3-phase, single solid and multi solid-bearing examples are present, with 2-phase the most abundant. Calcite, nahcolite, burbankite and barite were found in the inclusions. Decrepitation of inclusions occurred at around 200?C before homogenisation but melting temperature data indicate that the inclusions contain relatively pure CO2. A minimum salinity of around 24 wt.% NaCl equivalent was determined. Among the trace elements in whole rock analyses, enrichment in Ba, Mo, Nb, Pb, Sr, Th and Y and depletion in Co, Hf and V are common to carbonatite and fenite but enrichment in carbonatitic type elements (Ba, Nb, Sr, Th, Y, and REE) generally increases towards the inner parts of the aureole. A schematic model contains multiple fluid events, related to first and second boiling of the magma, accompanying intrusion of the carbonatites at Chilwa Island, each contributing to the mineralogy and chemistry of the fenite. The presence of distinct RE mineral micro-assemblages in fenite at some distance from carbonatite could be developed as an exploration indicator of REE enrichment.
DS201803-0444
2017
Dowman, E., Wall, F., Treloar, P.J., Rankin, A.H.Rare earth mobility as a result of multiple phases of fluid activity in fenite around the Chilwa Island carbonatite, Malawi.Mineralogical Magazine, Vol. 81, 6, pp. 1367-1395.Africa, Malawicarbonatite

Abstract: Carbonatites are enriched in critical raw materials such as the rare earth elements (REE), niobium, fluorspar and phosphate. A better understanding of their fluid regimes will improve our knowledge of how to target and exploit economic deposits. This study shows that multiple fluid phases penetrated the surrounding fenite aureole during carbonatite emplacement at Chilwa Island, Malawi. The first alkaline fluids formed the main fenite assemblage and later microscopic vein networks contain the minerals of potential economic interest such as pyrochlore in high-grade fenite and RE minerals throughout the aureole. Seventeen samples of fenite rock from the metasomatic aureole around the Chilwa Island carbonatite complex were chosen for study (Natural History Museum, London collection BM1968 P37). In addition to the main fenite assemblage of feldspar and aegirine ± arfvedsonite, riebeckite and richterite, the fenite contains micro-mineral assemblages including apatite, ilmenite, rutile, magnetite, zircon, RE minerals and pyrochlore in vein networks. Petrography using SEM-EDX showed that the RE minerals (monazite, bastnäsite and parisite) formed later than the fenite feldspar, aegirine and apatite and provide evidence of REE mobility into all grades of fenite. Fenite apatite has a distinct negative Eu anomaly (determined by LA-ICP-MS) that is rare in carbonatite-associated rocks and interpreted as related to pre-crystallisation of plagioclase and co-crystallisation with K-feldspar in the fenite. The fenite minerals have consistently higher mid REE/light REE ratios (La/Sm = ~1.3 monazite, ~1.9 bastnäsite, ~1.2 parisite) than their counterparts in the carbonatites (La/Sm = ~2.5 monazite, ~4.2 bastnäsite, ~3.4 parisite). Quartz in the low- and medium-grade fenite hosts fluid inclusions, typically a few µm in diameter, secondary and extremely heterogeneous. Single phase, 2- and 3-phase, single solid and multi solid-bearing examples are present, with 2-phase the most abundant. Calcite, nahcolite, burbankite and barite were found in the inclusions. Decrepitation of inclusions occurred at around 200?C before homogenisation but melting temperature data indicate that the inclusions contain relatively pure CO2. A minimum salinity of around 24 wt.% NaCl equivalent was determined. Among the trace elements in whole rock analyses, enrichment in Ba, Mo, Nb, Pb, Sr, Th and Y and depletion in Co, Hf and V are common to carbonatite and fenite but enrichment in carbonatitic type elements (Ba, Nb, Sr, Th, Y, and REE) generally increases towards the inner parts of the aureole. A schematic model contains multiple fluid events, related to first and second boiling of the magma, accompanying intrusion of the carbonatites at Chilwa Island, each contributing to the mineralogy and chemistry of the fenite. The presence of distinct RE mineral micro-assemblages in fenite at some distance from carbonatite could be developed as an exploration indicator of REE enrichment.
DS201803-0457
2017
Khedr, M.Z., Arai, S.Peridotite chromitite complexes in the eastern Desert of Egypt: insight into Neoproterozoic sub arc mantle processes.Gondwana Research, Vol. 52, pp. 59-70.Africa, Egyptchromitites

Abstract: The Neoproterozoic peridotite-chromitite complexes in the Central Eastern Desert of Egypt, being a part of the Arabian-Nubian Shield, are outcropped along the E-W trend from Wadi Sayfayn, Wadi Bardah, and Jabal Al-Faliq to Wadi Al-Barramiyah, from east to west. Their peridotites are completely serpentinized, and the abundance of bastite after orthopyroxene suggests harzburgite protoliths with subordinate dunites, confirmed by low contents of Al2O3, CaO and clinopyroxene (< 3 vol%) in bulk peridotites. The primary olivine is Fo89.3-Fo92.6, and the residual clinopyroxene (Cpx) in serpentinites contains, on average, 1.1 wt% Al2O3, 0.7 wt% Cr2O3, and 0.2 wt% Na2O, similar in chemistry to that in Izu-Bonin-Marian forearc peridotites. The wide range of spinel Cr-number [Cr/(Cr + Al)], 0.41-0.80, with low TiO2 (0.03 wt%), MnO (0. 3 wt%) and YFe [(Fe3 +/(Cr + Al + Fe3 +) = 0.03 on average)] for the investigated harzburgites-dunites is similar to spinel compositions for arc-related peridotites. The partial melting degrees of Bardah and Sayfayn harzburgites range mainly from 20 to 25% and 25 to 30% melting, respectively; this is confirmed by whole-rock chemistry and Cpx HREE modelling (~ 20% melting). The Barramiyah peridotite protoliths are refractory residues after a wide range of partial melting, 25-40%, where more hydrous fluids are available from the subducting slab. The Neoproterozoic mantle heterogeneity is possibly ascribed mainly to the wide variations of partial melting degrees in small-scale areas, slab-derived inputs and primordial mantle compositions. The Sayfayn chromitites were possibly crystallized from island-arc basaltic melts, followed by crystallization of Barramiyah chromitites from boninitic melt in the late stage of subduction. The residual Cpx with a spoon-shape REE pattern is rich in both LREE and fluid-mobile elements (e.g., Pb, B, Li, Ba, Sr), but poor in HFSE (e.g., Ta, Nb, Zr, Th), similar to Cpx in supra-subduction zone (SSZ) settings, where slab-fluid metasomatism is a prevalent agent. The studied chromitites and their host peridotites represent a fragment of sub-arc mantle, and originated in an arc-related setting. The systematic increase in the volume of chromitite pods with the increasing of their host-peridotite thickness from Northern to Southern Eastern Desert suggests that the thickness of wall rocks is one factor controlling the chromitite size. The factors controlling the size of Neoproterozoic chromitite pods are the thickness, beside the composition, of the host refractory peridotites, compositions and volumes of the supplied magmas, the amount of slab-derived fluids, and possibly the partial melting degree of the host peridotites.
DM201805-1097
2018
Republic of MiningDiamonds that fell to the Earth came from long lost planet researchers say.nationalpost.com, Apr. 18, 1/2p.Africa, SudanNews item - meteorite
DS201807-1519
2018
Nkono, C., Liegeois, J-P., Demaiffe, D.Relationships between structural lineaments and Cenozoic volcanism, Tibesti swell, Saharan metacraton.Journal of African Earth Sciences, Vol. 145, pp. 274-283.Africa, Chadlineaments

Abstract: This work reports an analysis of the relationships existing between the structural lineaments and the Cenozoic volcanism of the Tibesti area (northern Chad). Shield volcanoes, cinder cones, structural lineaments, intersection points of lineaments and faults are mapped using the combination of Shuttle Radar Topography Mission (SRTM), Digital Elevation Models (DEMs) and Landsat satellite images of the Tibesti Volcanic Province. The interpretation of the distribution of these structural and morphological features allows constraining the structural/tectonic setting of the Tibesti. We show that the relationships between the lineaments and the volcanic centres of the Tibesti province can locally be explained as the result of the combination of two Riedel dextral tectonic systems, respectively oriented at N120°E and N30-35°E. Taking into account the geological features of the area, a geodynamical model is proposed: the emplacement of the Tibesti Volcanic Province results from the reactivation of inherited structures of the Saharan metacraton, characterized by relict rigid cratonic nuclei and metacratonic areas reworked during the Pan-African orogeny, among which is located the Tibesti. The contrasted behaviour of these rheologically different zones can explain the location and the evolution of the Tibesti swell and volcanism. The new data presented in this paper and their interpretation in terms of the emplacement of the Tibesti volcanic province in the Saharan metacraton bring a new and major information about the behaviour of the African plate within its collisional context with Europe.
DS201809-2100
2018
Tepp, G., Ebinger, C.J., Zal, H., Gallacher, R., Accardo, N., Shillington, D.J., Gaherty, J., Keir, D., Nyblade, A.A., Mbogoni, G.J., Chindandali, P.R.N., Ferdinand-Wambura, R., Mulibo, G.D., Kamihanda, G.Seismic anistrotropy of the Upper mantle below the western rfit, East Africa.Journal of Geophysical Research, Vol. 123, 7, pp. 5644-5660.Africa, east Africageophysics - seismic

Abstract: Although the East African rift system formed in cratonic lithosphere above a large?scale mantle upwelling, some sectors have voluminous magmatism, while others have isolated, small?volume eruptive centers. We conduct teleseismic shear wave splitting analyses on data from 5 lake?bottom seismometers and 67 land stations in the Tanganyika?Rukwa?Malawi rift zone, including the Rungwe Volcanic Province (RVP), and from 5 seismometers in the Kivu rift and Virunga Volcanic Province, to evaluate rift?perpendicular strain, rift?parallel melt intrusion, and regional flow models for seismic anisotropy patterns beneath the largely amagmatic Western rift. Observations from 684 SKS and 305 SKKS phases reveal consistent patterns. Within the Malawi rift south of the RVP, fast splitting directions are oriented northeast with average delays of ~1 s. Directions rotate to N?S and NNW north of the volcanic province within the reactivated Mesozoic Rukwa and southern Tanganyika rifts. Delay times are largest (~1.25 s) within the Virunga Volcanic Province. Our work combined with earlier studies shows that SKS?splitting is rift parallel within Western rift magmatic provinces, with a larger percentage of null measurements than in amagmatic areas. The spatial variations in direction and amount of splitting from our results and those of earlier Western rift studies suggest that mantle flow is deflected by the deeply rooted cratons. The resulting flow complexity, and likely stagnation beneath the Rungwe province, may explain the ca. 17 Myr of localized magmatism in the weakly stretched RVP, and it argues against interpretations of a uniform anisotropic layer caused by large?scale asthenospheric flow or passive rifting.
DS201902-0261
2019
Baratoux, L., Soderlund, U., Ernst, R.E., de Roever, E., Jessell, M.W., Kamo, S., Naba, S., Perrouty, S., Metelka, V., Yatte, D., Grenholm, M., Diallo, D.P., Ndiaye, P.M., Dioh, E., Cournede, C., Benoit, M., Baratoux, D., Youbi, N., Rousse, S., BendaoudNew U-Pb baddeleyite ages of mafic dyke swarms of the West African and Amazonian cratons: implication for their configuration in supercontinents through time.Dyke Swarms of the World: a modern perspective, Srivastava et al. eds. Springer , pp. 263-314.Africa, West Africa, South Americageochronology

Abstract: Eight different generations of dolerite dykes crosscutting the Paleoproterozoic basement in West Africa and one in South America were dated using the high precision U-Pb TIMS method on baddeleyite. Some of the individual dykes reach over 300 km in length and they are considered parts of much larger systems of mafic dyke swarms representing the plumbing systems for large igneous provinces (LIPs). The new U-Pb ages obtained for the investigated swarms in the southern West African Craton (WAC) are the following (oldest to youngest): 1791?±?3 Ma for the N010° Libiri swarm, 1764?±?4 Ma for the N035° Kédougou swarm, 1575?±?5 for the N100° Korsimoro swarm, ~1525-1529 Ma for the N130° Essakane swarm, 1521?±?3 Ma for the N90° Sambarabougou swarm, 915?±?7 Ma for the N070° Oda swarm, 867?±?16 Ma for the N355° Manso swarm, 202?±?5 Ma and 198?±?16 Ma for the N040° Hounde swarm, and 200?±?3 Ma for the sills in the Taoudeni basin. The last ones are related to the Central Atlantic Magmatic Province (CAMP) event. The Hounde swarm is oblique to the dominant radiating CAMP swarm and may be linked with the similar-trending elongate Kakoulima intrusion in Guinea. In addition, the N150° Käyser swarm (Amazonian craton, South America) is dated at 1528?±?2 Ma, providing a robust match with the Essakane swarm in a standard Amazonia-West African craton reconstruction, and resulting in a combined linear swarm >1500 km by >1500 km in extent. The Precambrian LIP barcode ages of c. 1790, 1765-1750, 1575, 1520, 915. 870 Ma for the WAC are compared with the global LIP record to identify possible matches on other crustal blocks, with reconstruction implications. These results contribute to the refinement of the magmatic ‘barcode’ for the West African and Amazonian cratons, representing the first steps towards plausible global paleogeographic reconstructions involving the West African and Amazonian cratons.
DS201904-0727
2019
Decree, S., Demaiffe, D., Tack, L., Nimpagaritse, G., De Paepe, P., Bouvais, P., Debaille, V.The Neoproterozoic Upper Ruvubu alkaline plutonic complex ( Burundi) revisited: large scale syntectonic emplacement, magmatic differentiation and late stage circulations of fluids.Precambrian Research, Vol. 325, pp. 150-171.Africa, Burundicarbonatite

Abstract: The Upper Ruvubu Alkaline Plutonic Complex (URAPC) in Burundi consists of three separate intrusions, each with a specific emplacement age and petrological composition. Three main units are recognized: an outer unit with silica-saturated plutonic rocks (from gabbro to granite), an inner unit with silica-undersaturated plutonic rocks (feldspathoidal syenite with subordinate feldspathoidal monzonite and ijolite) and a carbonatitic body in the subsoil, known by drilling. The URAPC is quite large in size (?24?km long and up to 10?km wide). It is considered to have been intruded syntectonically in an overall extensional context, thanks to the kilometric shear zones that accommodated its emplacement. Radiometric ages from literature range from 748 to 705?Ma and point to structurally-controlled magmatic differentiation followed by long-lived circulations of late-stage fluids postdating the emplacement of a part of the undersaturated rocks and the carbonatites. In the north-western part of the outer unit, gabbro likely has been emplaced at a deeper structural level than the granite, which represents a more apical structural level of emplacement. This petrological, geochemical and isotopic (Sr-Nd-Hf) study concentrates on the processes that generated the URAPC: (i) fractional crystallization, evidenced by the chemical evolution trends of the major and trace elements, and by marked P, Ti and Ba anomalies in the trace element patterns; (ii) crustal assimilation/contamination, as shown by the wide range of Nd isotope compositions and the general increase of the Sr isotope ratios with increasing SiO2 contents, and (iii) late-magmatic/hydrothermal alteration inducing an increase of the Sr isotope composition without changing significantly the Nd isotope composition. The isotopic data are consistent with an asthenospheric mantle source, though less depleted than the Depleted Mantle (DM), contaminated by the Subcontinental Lithospheric Mantle (SCLM). The silicate and carbonate magmatic series are cogenetic. The outer unit is clearly more contaminated than the inner unit, whereas the carbonatitic body could have evolved by liquid immiscibility. The URAPC lies within East Africa’s Western Rift Valley, which is marked by 23 alkaline plutonic complexes. Their emplacement has been ascribed to reactivation of Proterozoic lithospheric weakness zones resulting from the breakup of the Neoproterozoic supercontinent Rodinia supercontinent.
DS201906-1267
2019
Armitage, P.E.B.The Songwe Hill rare earths project, Malawi - geological observations on the recently announced mineral resource upgrade.3rd International Critical Metals Meeting held Edinburgh, 1p. Abstract p. 37.Africa, Malawideposit - Songwe Hill

Abstract: PDF link to the presentation.
DS201906-1277
2019
Boulvais, P., Ntiharirizwa, S., Branquet, Y., Poujol, M., Moreli, C., Ntungwanayo, J., Midende, G.Geology and U-Th dating of the Gakara REE deposit.GAC/MAC annual Meeting, 1p. Abstract p. 64.Africa, BurundiREE

Abstract: The Gakara Rare Earth Elements (REE) deposit is one of the world’s highest grade REE deposits, likely linked to a carbonatitic magmatic-hydrothermal activity. It is located near Lake Tanganyika in Burundi, along the western branch of the East African Rift. Field observations suggest that the mineralized veins formed in the upper crust. Previous structures inherited from the Kibaran orogeny may have been reused during the mineralizing event. The paragenetic sequence and the geochronological data show that the Gakara mineralization occurred in successive stages in a continuous hydrothermal history. The primary mineralization in bastnaesite was followed by an alteration stage into monazite. The U-Th-Pb ages obtained on bastnaesite (602 ± 7 Ma) and on monazite (589 ± 8 Ma) belong to the Pan-African cycle. The emplacement of the Gakara REE mineralization most likely took place during a pre-collisional event in the Pan-African belt, probably in an extensional context.
DM201906-1442
2019
Rough-polishedMurowa starts diamond exploration in Chivi - report.rough-polished.com, Apr. 30, 1/4p.Africa, Zimbabwe, MasvingoNews item - Murowa
DS201908-1769
2019
Alessio, B.L., Glorie, S., Collins, A.S., Jourdan, F., Jepson, G., Nixon, A., Siegfried, P.R., Clark, C.The thermo-tectonic evolution of the southern Congo craton margin as determined from apatite and muscovite thermochronology.Tectonophysics, Vol. 766, pp. 398-415.Africa, Zambia, Malawi, Mozambique, Tanzaniacraton

Abstract: The Southern Irumide Belt (SIB) of Zambia consists of predominantly Mesoproterozoic terranes that record a pervasive tectono-metamorphic overprint from collision between the Congo and Kalahari cratons in the final stages of Gondwana amalgamation. This study applies multi-method thermochronology to samples throughout southern Zambia to constrain the post-collisional, Phanerozoic thermo-tectonic evolution of the region. U-Pb apatite and 40Ar/39Ar muscovite data are used to constrain the cooling history of the region following Congo-Kalahari collision, and reveal ages of c. 550-450?Ma. Variations in the recorded cooling ages are interpreted to relate to localised post-tectonic magmatism and the proximity of analysed samples to the Congo-Kalahari suture. Apatite fission track data are used to constrain the low-temperature thermo-tectonic evolution of the region and identify mean central ages of c. 320-300, 210-200 and 120-110?Ma. Thermal modelling of these samples identifies a number of thermal events occurring in the region throughout the Phanerozoic. Carboniferous to Permian-Triassic heating is suggested to relate to the development of Karoo rift basins found throughout central Africa and constrain the timing of sedimentation in the basin. Permian to Jurassic cooling is identified in a number of samples, reflecting exhumation as a result of the Mauritanian-Variscan and Gondwanide orogenies. Subsequent cooling of the majority of samples occurs from the Cretaceous and persists until present, reflecting exhumation in response to larger scale rifting associated with the break-up of Gondwana. Each model reveals a later phase of enhanced cooling beginning at c. 30?Ma that, if not an artefact of modelling, corresponds to the development of the East African Rift System. The obtained thermochronological data elucidate the previously unconstrained thermal evolution of the SIB, and provides a refined regional framework for constraining the tectonic history of central Africa throughout the Phanerozoic.
DS201908-1786
2019
Li, W-Y., Yu, H-M., Xu, J., Halama, R., Bell, K., Nan, X-Y., Huang, F.Barium isotopic composition of the mantle: constraints from carbonatites.Geochimica et Cosmochimica Acta, in press available doi.org/10.1016 / j.gca.2019.06.041 36p.Africa, Tanzania, Canada, East Africa, Europe, Germany, Greenlanddeposit - Oldoinyo Lengai

Abstract: To investigate the behaviour of Ba isotopes during carbonatite petrogenesis and to explore the possibility of using carbonatites to constrain the Ba isotopic composition of the mantle, we report high-precision Ba isotopic analyses of: (1) carbonatites and associated silicate rocks from the only active carbonatite volcano, Oldoinyo Lengai, Tanzania, and (2) Archean to Cenozoic carbonatites from Canada, East Africa, Germany and Greenland. Carbonatites and associated phonolites and nephelinites from Oldoinyo Lengai have similar ?137/134Ba values that range from +0.01 to +0.03‰, indicating that Ba isotope fractionation during carbonatite petrogenesis is negligible. The limited variation in ?137/134Ba values from ?0.03 to +0.09‰ for most carbonatite samples suggests that their mantle sources have a relatively homogeneous Ba isotopic composition. Based on the carbonatites investigated in this work, the average ?137/134Ba value of their mantle sources is estimated to be +0.04?±?0.06‰ (2SD, n?=?16), which is similar to the average value of +0.05?±?0.06‰ for mid-ocean ridge basalts. The lower ?137/134Ba value of ?0.08‰ in a Canadian sample and higher ?137/134Ba values of +0.14‰ and?+?0.23‰ in two Greenland samples suggest local mantle isotopic heterogeneity that may reflect the incorporation of recycled crustal materials in their sources.
DS201912-2835
2019
Yang, Y-H., Wu, F-Y., Qiu-Li, L., Rojas-Agramonte, Y., Yang, J-H., Yang, L., Ma, Q., Xie, L-W., Huang, C., Fan, H-R., Zhao, Z-F., Xu, C.In situ U-Th-Pb dating and Sr-Nd isotope analysis of bastnasite by LA-(MC)-ICP-MS.Geostandards and Geoanalltical Research, Vol. 43, 3, pp. 543-565.China, Europe, Sweden, Asia, Mongolia, United States, Africa, Malawi, MadagascarREE

Abstract: Bastnäsite is the end member of a large group of carbonate-fluoride minerals with the common formula (REE) CO3F•CaCO3. This group is generally widespread and, despite never occurring in large quantities, represents the major economic light rare earth element (LREE) mineral in deposits related to carbonatite and alkaline intrusions. Since bastnäsite is easily altered and commonly contains inclusions of earlier?crystallised minerals, in situ analysis is considered the most suitable method to measure its U?Th?Pb and Sr?Nd isotopic compositions. Electron probe microanalysis and laser ablation (multi?collector) inductively coupled plasma?mass spectrometry of forty?six bastnäsite samples from LREE deposits in China, Pakistan, Sweden, Mongolia, USA, Malawi and Madagascar indicate that this mineral typically has high Th and LREE and moderate U and Sr contents. Analysis of an in?house bastnäsite reference material (K?9) demonstrated that precise and accurate U?Th?Pb ages could be obtained after common Pb correction. Moreover, the Th?Pb age with its high precision is preferable to the U?Pb age because most bastnäsites have relatively high Th rather than U contents. These results will have significant implications for understanding the genesis of endogenous ore deposits and formation processes related to metallogenic geochronology research.
DM202001-0113
2019
Rough-polishedAlgeria considers ways to work with AGD Diamonds in forecasting and prospecting.rough-polished.com, Dec. 17, 1/4p.Africa, AlgeriaNews item - AGD
DM202003-0434
2020
Rough-polishedTransguard & TRIGEM DMSS join hands to provide secure transport services.rough-polished.com, Jan. 31, 1/4p.United Arab RepublicNews item - transport
DS202005-0717
2020
Abdel Halim, A.H., Helmy, H.H., Elhaddad, M.A., El-Mahallawi, M., Mogessie, A.Petrology of a Neoproteroxoic mantle peridotite-chromitite association from Abu Dahr area, eastern Egypt Desert, Egypt: infiltration of boninitic melt in highly depleted harzburgite.Journal of African Earth Sciences, Vol. 165, 18p. PdfAfrica, EgyptBoninite

Abstract: Peridotites of Abu Dahr represent the main litho-unit of a Neoproterozoic dismembered ophiolite sequence and are among the best-preserved and well-exposed mantle rocks in South Eastern Desert of Egypt. Here, we present new geochemical and mineral chemical data for peridotites and associated pyroxenites and for chromitites and their platinum-group minerals to constrain their petrogenesis and geotectonic setting. The Abu Dahr ophiolite mantle section consists mainly of harzburgites, cut by pyroxenite dykes and containing dunite-chromitite lenses. The harzburgites are composed of olivine, orthopyroxene, spinel and minor clinopyroxene (?1.0 vol %) and amphibole. Olivine from harzburgites is highly magnesian (Fo 91-93) and Cr-spinel shows a wide-range of Cr2O3 and Al2O3 contents. The enstatite component of orthopyroxene decreases from harzburgite (En = 90-91) to orthopyroxenite (En = 84-87). Amphiboles are represented by magnesiohornblende and tschermakite. The chromitites are massive to disseminated and composed of magnesiochromite with high Cr# (83-93) and Mg# (66-79), and low TiO2 (<0.1 wt%) content. Solid inclusions in chromite include olivine, orthopyroxene and hornblende. Laurite (RuS2) is the most common PGM detected in the investigated chromitite samples and forms micrometer-size inclusions in fresh chromite. Various Ni-sulfides are found both in fresh chromite and along serpentine veinlets. Harzburgites have a refractory composition with a very low Al2O3 (0.4-0.8 wt%) and CaO (0.2-1.6 wt%) contents and high bulk-rock Mg# (89-92). Geochemical data suggest that the Abu Dahr peridotites are highly depleted SSZ peridotites formed in a forearc mantle wedge setting by high degrees of hydrous partial melting and emplaced as a result of the collision of the intra-oceanic arc with the Beitan gneisses. The podiform chromitites and orthopyroxenites were formed due to impregnation of mantle wedge harzburgites by boninitic melt. The highly depleted nature of the harzburgite is responsible for the small reserves of chromite ore at Abu Dahr and in the South Eastern Desert in general.
DS202007-1120
2020
Abe, N., Surour, A.A., Madani, A.A., Arai, S.Metasomatized peridotite xenoliths from the Cretaceous rift related Natash volcanics and their bearing on the nature of the lithospheric mantle beneath the southern part of the eastern desert of Egypt.Lithos, in press available , 47p. PdfAfrica, Asia, Egyptperidotites

Abstract: Highly carbonated mantle xenoliths have been found in rift-related alkaline basalts at the Wadi Natash area in the southern part of the Eastern Desert of Egypt. Although all olivine and most orthopyroxene was replaced by carbonate and/or quartz, textural and mineral chemical features show that they are plagioclase-free spinel peridotites (lherzolite to harzburgite). Cr and Mg numbers (Cr#, Mg#) of Cr-spinel vary from 0.06 to 0.45 and 0.73 to 0.81, respectively. The correlation between Cr# and Mg# of the Cr-spinel in the studied xenoliths is weakly negative and its TiO2 content is slightly higher than in abyssal peridotite that was not affected by melt injection. The chemistry of ortho- and clinopyroxene suggests enstatite and chromian diopside compositions, respectively, with distinct signatures of a sub-continental mantle source. In particular, the Na2O contents (>1.0?wt%) and AlVI/AlIV ratios (1.2-2.6) of chromian diopside suggest such an origin. Two-pyroxene geothermometry indicates a temperature of about 900?°C, which is slightly lower than that of ordinary spinel peridotite xenoliths from other rift zones. It is evident that the studied peridotite xenoliths had experienced mantle processes (e.g. decompression melting, magma upwelling and metasomatism) at higher pressure than abyssal peridotites. The trace-element chemistry of clinopyroxene, e.g. high LREE/HREE ratios {(Ce/Yb)n?=?7}, high LREE contents (>3.6?ppm and up to 30.0?ppm Ce) and high Sr between >85.6?ppm and 466?ppm, indicates metasomatic alteration of the peridotite. Clinopyroxene in one sample has very low Ti/Eu and high LREE/HREE ratios. Clinopyroxene with (Ce/Yb)n higher than 3-4 and Ti/Eu ratio lower than 1500 may have experienced carbonatite or carbonate-rich melt metasomatism prior to their incorporation into the host basalt. The basalt itself is almost devoid of any carbonatization and hence the studied mantle peridotites were carbonatized before the generation of the basaltic magma but following an earlier event of K-metasomatism as indicated by the presence of phlogopite. The studied peridotites from the Wadi Natash area were altered by a carbonate-rich melt during a rifting stage. The results of the present paper indicate that the Natash basalts with their peridotite xenoliths extruded along transversal fractures of the NW-trending Nuqra-Kom Ombo-Kharit continental rift on its western shoulder in the south Eastern Desert of Egypt.
DS202008-1373
2020
Buyse, F., Dewaele, S., Decree, S., Mees, F.Mineralogical and geochemical study of the rare earth element mineralization at Gakara ( Burundi).Ore Geology Reviews, Vol. 124, 103659 10p. PdfAfrica, BurundiREE

Abstract: The rare earth element (REE) mineralization of Gakara (Burundi) has first been discovered in 1936 and has periodically been the subject of geological studies, at times when the exploitation of bastnäsite-(Ce) and monazite-(Ce) was economically interesting. This study focuses on the establishment of a mineral paragenesis for Gakara, with special attention to the REE-bearing phases, to understand the formation history of the deposit. The paragenesis can be subdivided into 3 stages: primary ore deposition, brecciation stage and supergene alteration. Evidence for fenitization processes (i.e. pinkish-red cathodoluminescence of K-feldpar, brecciation stage) and the strong enrichment of light REEs in bastnäsite and monazite substantiate the hypothesis of a structurally controlled hydrothermal mineralization with a strong carbonatitic affinity. This likely confirms the association of the Gakara REE deposit with the Neoproterozoic alignment of alkaline complexes and carbonatites along the present-day Western Rift. It suggests a direct link with a - currently unidentified - carbonatitic body at depth, possibly derived from a predominantly metasomatized lithospheric mantle.
DS202009-1643
2020
Nabyl, Z., Massuyeau, M.,Gaillard, F., Tuduri, J., Gregory, G-M., Trong, E., Di Carlo, I., Melleton, J., Bailly, L. A window in the course of alkaline magma differentiation conducive to immiscible REE-rich carbonatite.Geochimica et Cosmochimica Acta, Vol. 282, pp. 297-323.Africa, East Africacarbonatites

Abstract: Rare earth element (REE) enrichments in carbonatites are often described as resulting from late magmatic-hydrothermal or supergene processes. However, magmatic pre-enrichment linked to the igneous processes at the origin of carbonatites are likely to contribute to the REE fertilisation. Experimental constraints reveals that immiscibility processes between carbonate and silicate melts can lead to both REE enrichments and depletions in carbonatites making the magmatic processes controlling REE enrichments unclear. We link REE contents of carbonatites to the magmatic stage at which carbonatites are separated from silicate magma in their course of differentiation. We present results of experiments made at pressure and temperature conditions of alkaline magmas and associated carbonatites differentiation (0.2-1.5 GPa; 725-975?°C; FMQ to FMQ?+?2.5), simultaneously addressing crystal fractionation of alkaline magmas and immiscibility between carbonate (calcio-carbonate type) and silicate melts (nephelinite to phonolite type). The experimental data shows that the degree of differentiation, controlling the chemical composition of alkaline melts, is a key factor ruling the REE concentration of the coexisting immiscible carbonate melts. In order to predict carbonate melt REE enrichments during alkaline magma differentiation, we performed a parameterisation of experimental data on immiscible silicate and carbonate melts, based exclusively on the silica content, the alumina saturation index and the alkali/alkaline-earth elements ratio of silicate melts. This parameterisation is applied to more than 1600 geochemical data of silicate magmas from various alkaline provinces (East African Rift, Canary and Cape Verde Islands) and show that REE concentrations of their potential coeval carbonatite melts can reach concentration ranges similar to those of highly REE enriched carbonatites (?REE?>?30 000?ppm) by immiscibility with phonolitic/phono-trachytic melt compositions, while more primitive alkaline magmas can only be immiscible with carbonatites that are not significantly enriched in REE.
DM202009-1787
2020
StockwatchMetalex Ventures Ltd. Discussion on quarterly report on areas of interest.stockwatch, Aug. 19, 1p.Africa, Morocco, Mauritania, MaliNews item - Metalex
DS202104-0593
2021
Marshall, T., Ward, J.D., de Wit, M.C.Alluvial diamond deposits across Africa - a travelogue.Geological Society of South Africa presentation, https://www.youtube.com/watch?v=1tsWuXo6fB4&t=23sAfrica, Lesotho, Cote d'Ivoire, Democratic Republic of Congo, Tanzania, Angola, South Africa, Ghana, Mauritania, Zimbabwe, Namibia, Central African Republic, Cameroon, Swaziland, Mali, Sierra Leone, Liberia, Guineaalluvials
DS202108-1275
2021
Broom-Fendley, S., Elliott, H.A.L., Beard, C.D., Wall, F., Armitage, P.E.B., Brady, A.E., Deady, A.E., Dawes, W.Enrichment of heavy REE and Th in carbonatite-derived fenite breccia.Geological Magazine, in press available Africa, Malawideposit - Songwe Hill

Abstract: Enrichment of the heavy rare earth elements (HREE) in carbonatites is rare as carbonatite petrogenesis favours the light (L)REE. We describe HREE enrichment in fenitized phonolite breccia, focusing on small satellite occurrences 1-2 km from the Songwe Hill carbonatite, Malawi. Within the breccia groundmass, a HREE-bearing mineral assemblage comprises xenotime, zircon, anatase/rutile and minor huttonite/thorite, as well as fluorite and apatite. A genetic link between HREE mineralization and carbonatite emplacement is indicated by the presence of Sr-bearing carbonate veins, carbonatite xenoliths and extensive fenitization. We propose that the HREE are retained in hydrothermal fluids which are residually derived from a carbonatite after precipitation of LREE minerals. Brecciation provides a focusing conduit for such fluids, enabling HREE transport and xenotime precipitation in the fenite. Continued fluid-rock interaction leads to dissolution of HREE-bearing minerals and further precipitation of xenotime and huttonite/thorite. At a maximum Y content of 3100 µg g?1, HREE concentrations in the presented example are not sufficient to constitute ore, but the similar composition and texture of these rocks to other cases of carbonatite-related HREE enrichment suggests that all form via a common mechanism linked to fenitization. Precipitation of HREE minerals only occurs where a pre-existing structure provides a focusing conduit for fenitizing fluids, reducing fluid - country-rock interaction. Enrichment of HREE and Th in fenite breccia serves as an indicator of fluid expulsion from a carbonatite, and may indicate the presence of LREE mineralization within the source carbonatite body at depth.
DM202111-1818
2021
Diamonds.netComments on Pandora offshore accounts list Modi, Steinmetz, Ruswaya, Sassou-Nguesso. Diamond interestsdiamonds.net, Oct 5, 1/4p.India, Europe, Israel, Africa, Zimbabwe, Republic of CongoNews item - legal
DS202111-1768
2021
Gong, Z., Evans, D.A.D., Youbi, N., Lahna, A.A., Sodelund, U., Malek, M.A., Wen, B., Jing, X., Ding, J., Boumedhdi, M.A., Ernst, R.E.Reorienting the West African craton in Paleoproterozoic-Msoproterozoic supercontinent Nuna.Geology, Vol. 49, 10, pp. 1171-1176. pdfAfrica, west AfricaNuna

Abstract: The location of the West African craton (WAC) has been poorly constrained in the Paleoproterozoic-Mesoproterozoic supercontinent Nuna (also known as Columbia). Previous Nuna reconstruction models suggested that the WAC was connected to Amazonia in a way similar to their relative position in Gondwana. By an integrated paleomagnetic and geochronological study of the Proterozoic mafic dikes in the Anti-Atlas Belt, Morocco, we provide two reliable paleomagnetic poles to test this connection. Incorporating our new poles with quality-filtered poles from the neighboring cratons of the WAC, we propose an inverted WAC-Amazonia connection, with the northern WAC attached to northeastern Amazonia, as well as a refined configuration of Nuna. Global large igneous province records also conform to our new reconstruction. The inverted WAC-Amazonia connection suggests a substantial change in their relative orientation from Nuna to Gondwana, providing an additional example of large-magnitude cumulative azimuthal rotations between adjacent continental blocks over supercontinental cycles.
DS202204-0516
2022
Boscaini, A., Marzoli, A., Bertrand, H., Chiagradia, M., Jourdan, F., Faccende, M., Meyzen, C.M., Callegaro, S., Duran, L. Cratonic keels controlled the emplacement of the Central Atlantic Magmatic Province ( CAMP)Earth and Planetary Science Letters, Vol. 584, doi 10.1016/j.espl.2022.117480Africa, Mali, Mauritaniacraton

Abstract: Large Igneous Provinces (LIPs) are exceptionally voluminous magmatic events frequently related to continental break-up, global climate changes and mass extinctions. One interesting aspect of many LIPs is their spatial proximity to cratons, begging the question of a potential control of thick lithosphere on their emplacement. In this study, we investigate the relationship between the emplacement of the Central Atlantic Magmatic Province (CAMP) and the thick lithospheric mantle of the Precambrian cratons that formed the central portion of Pangea and are currently located on the continents surrounding the Central Atlantic Ocean. CAMP outcrops are frequently located over the margins of the thick cratonic keels, as imaged by recent tomographic studies, suggesting a role of lithosphere architecture in controlling magma genesis and emplacement. Here we focus on CAMP dykes and sills from the Hank, Hodh, and Kaarta basins in North-Western Africa (NW-Africa, Mali and Mauritania) emplaced at the edge of the Reguibat and Leo-Man Shields. The investigated intrusive rocks show compositions similar to most CAMP magmas, in particular those of the Tiourjdal geochemical group, limited to NW-Africa, and of the Prevalent group, occurring all over the CAMP. Geochemical modelling of CAMP basalts requires a Depleted MORB Mantle (DMM) source enriched by recycled continental crust (1-4%) and melting beneath a lithosphere of ca. 80 km in thickness. On the contrary, melting under a significantly thicker lithosphere (>110 km) does not produce magmas with compositions similar to those of CAMP basalts. This suggests that CAMP magmatism was likely favoured by decompression-induced partial melting of the upwelling asthenospheric mantle along the steep lithospheric boundaries of stable cratons. The architecture of the pre-existing lithosphere (i.e., the presence of stable thick cratonic keels juxtaposed to relatively thinner lithosphere) appears to have been a critical factor for localizing mantle upwelling and partial melting during extensive magmatic events such as in the CAMP.
 
 

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