Mauritania - Technical, Media and Corporate |
Posted/ Published | Author | Title | Source | Region | Keywords |
---|
DS1985-0739 1985 | Wooley, A.R., Ramkin, A.H., Elliott, C.J., Bishot, A.C., Niblett, D. | Carbonatite dykes from the Richat dome, Mauritania and genesis of thedome | Indian Mineralogist, Sukheswala Volume, pp. 189-207 | Mauritania | Carbonatite |
DS1989-0002 1989 | Abouchamy, W., Boher, M., Michard, A., Albarede, E., et al. | Crustal growth in West Africa at 2.1 Ga: preliminary results | Eos, Vol. 70, No. 15, April 11, p. 485. (abstract.) | West Africa, Mauritania, Senegal, Mali, Guinea, Ivory Coast | Ghana, Burkina Faso, Tectonics, Geochronology |
DM1994-2051 1994 | Diamond International | Northwest African country of Mauritania may become a target for diamondexploration. | Diamond International, July/August p. 41. | Mauritania | News item, Reguibat Massif |
DM1994-2118 1994 | Engineering and Mining Journal | Mineral potential of western Africa | Engineering and Mining Journal, February pp. ww-18-21 | West Africa, Sierra Leone, Mauritania, Senegal, Mali | Greenstone belts, Guinea, Liberia, Ivory Coast, Burkina Faso, Niger |
DM1996-2164 1996 | Mining Magazine | West 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 Faso | Niger, Senegal, Gold exploration -not specific to diamonds |
DM1997-1636 1997 | London Mining Journal | Mauritanian permits secured | London Mining Journal, Vol. 329, No. 8451, Oct. 17, p. 321. | Mauritania | News item, Rex Diamond Mining |
DS1997-0774 1997 | MIGA Conference held Denver June 3-5 | Note on mining sector | Miga Conference Held Denver June 3-5, 19p | Mauritania | Mining |
DS1997-0775 1997 | MIGA Conference held Denver June 3-5 | Presentation by the Minister of Mines on mining industry | Miga Conference Held Denver June 3-5, 4p | Mauritania | Mining |
DS1997-0776 1997 | MIGA Conference held Denver June 3-5 | Societe Nationale industrielle et miniere | Miga Conference Held Denver June 3-5, 5p | Mauritania | Mining |
DS1997-0777 1997 | MIGA Conference held Denver June 3-5 | Mining code | Miga Conference Held Denver June 3-5, 16p | Mauritania | Mining, Legal |
DS1997-0778 1997 | MIGA Conference held Denver June 3-5 | Political - legal aspects | Miga Conference Held Denver June 3-5, 9p | Mauritania | Mining, Legal - political |
DM1997-1891 1997 | Northern Miner | Rex tests African project.. | Northern Miner, Vol. 83, No. 34, Oct. 20, p. 6. | Mauritania, North Africa | News item, Rex Diamond Mining |
DM1998-1997 1998 | London Mining Journal | Mauritanian update.... Rex Diamond found further pyrope garnets and chromediopside... | London Mining Journal, Vol. 330, No. 8467, Feb. 13, p. 124. | Mauritania | News item, Rex Diamond Mining |
DM1998-1998 1998 | London Mining Journal | Rex barking up the right tree... surface gravel at Toujil El Hammamiarea... diamonds recovered. | London Mining Journal, Vol. 331, No. 8496, Sept. 4, p. 177. | Mauritania | News item, Rex Diamond Mining |
DM1998-1999 1998 | London Mining Journal | Rex's Mauritanian discovery | London Mining Journal, Vol. 330, No. 8464, Jan. 23, p. 57. | Mauritania | News item, Rex Mining |
DM1998-2295 1998 | Northern Miner | Rex finds indicators in Mauritania | Northern Miner, Vol. 82, No. 53, Feb. 23-March 1, p. 1, 6. | Mauritania | News item, Rex Diamond |
DM1998-2296 1998 | Northern Miner | Rex Diamond explores in Mauritania... kimberlites | Northern Miner, Vol. 83, No. 48, Jan. 26, p. B7. | Mauritania | News item, Rex Diamond |
DM1998-2297 1998 | Northern Miner | Rex reports discovery in Mauritania... El Hammami lease | Northern Miner, Vol. 84, No. 28, Sept. 7-13, p. 11. | Mauritania | News item, Rex Diamond Mining |
DM1998-2484 1998 | Paydirt | Rex targets pipe -like bodies | Paydirt, Vol. 1, No. 40, June p. 51. | Mauritania | News item, Rex Diamond Mining Corp. |
DC1998-2919 1998 | Rex Diamond Mining Corp | Positive initial sampling results accelerates trenching program inMauritania. Taouderi Basin Rim. | Rex Mining, April. 23, 2p. | Mauritania | News item - press release |
DC1998-2920 1998 | Rex Diamond Mining Corp | Rex finds diamonds in Mauritania... south of Touajil in the El Hammami exploration lease. | Rex Mining, Aug. 31, 1p. | Mauritania | News item - press release |
DC1998-2921 1998 | Rex Diamond Mining Corp | G10 garnets and chromium diopside with rock fragments point to kimberlites In the Sahara desert of Mauritania | Rex Diamond Mining, Feb. 11, 2p. | Mauritania | News item - press release |
DC1998-2922 1998 | Rex Diamond Mining Corp | Magnetic models point to potential kimberlite bodies in Mauritania, full stretch of Taoudeni Basin... | Rex Diamond Mining, March 2, 2p. | Mauritania | News item - press release, Taoudeni Basin |
DC1998-2925 1998 | Rex Diamond Mining Corp | Financial statements for the year ended March 31. Loss, cutbacks and writeoffs. | Rex Diamond Mining, Aug. 28, 1p. | South Africa, Mauritania, Liberia | News item - press release |
DC1998-2926 1998 | Rex Diamond Mining Corp | Corporate update.. debt financing of $ 3.M United States... reduction of cash costs atMines. | Rex Diamond Mining Corp., June 29, 2p. | South Africa, Mauritania, Sierra Leone | News item - press release |
DM1999-0846 1999 | African Mining | Melbourne based Ashton Mining and Dia Met have formed a joint venture to discover and develop diamond deposits. | African Mining, Vol. 4, No. 4, July-Aug. p. 8. | Mauritania | News item, Ashton Mining Ltd. |
DM1999-0847 1999 | African Mining | Sixteen macro diamonds found Touajil area | African Mining, Vol. 4, No. 2, Mar-Apr. p. 13. | Mauritania | News item, Rex Diamond Mining |
DM1999-0878 1999 | Coakley, G., Mobbs, P. | African mining - an overview.Sierra Leone. | London Mining Journal, Vol. 332, No. 8515 Jan. 22, p. 11, 13. | South Africa, Botswana, Angola, Namibia, Congo, Mauritania | News item, Diamond exploration |
DC1999-1477 1999 | Dia Met Minerals Ltd | Mauritanian joint venture formed with Ashton Mining | George Cross Newsletter, No. 86, May 5. | Mauritania | News item - press release, Ashton Mining Ltd. |
DC1999-1494 1999 | Dia Met Minerals Ltd, Ashton Mining Ltd. | Dia Met and Ashton announce Mauritanian exploration joint venture | Dia Met Minerals Ltd., May 3, 2p. | Mauritania | News item - press release, Ashton Mining Ltd. |
DM1999-0984 1999 | Globe & Mail | Rex Diamond Mining Corp. completed private placement | Globe and Mail, June 4, 1/8p. | Mauritania | News item, Rex Diamond Mining Corp. |
DM1999-1094 1999 | London Mining Journal | African mining - an overview. Mauritania | London Mining Journal, Vol. 332, No. 8515 Jan. 22, p.79. | Mauritania | Country profile, Diamonds |
DM1999-1095 1999 | London Mining Journal | Mauritania's mineral opportunities.... diamond discoveries | London Min. Journal, Vol. 332, No.8516, Jan. 29, p. 62-3. | Mauritania | Mineral - outline, Diamonds p. 62-3. |
DM1999-1096 1999 | London Mining Journal | Mauritanian diamond partnership | London Mining Journal, Vol. 332, No. 8530, May 7, p. 334. | Mauritania | News item, Dia Met Minerals, Ashton Mining Ltd. |
DM1999-1097 1999 | London Mining Journal | Mauritania: diamond... | London Mining Journal, Exploration Suppl., p. 89. | Mauritania | News item, Diamond activity |
DM1999-1098 1999 | London Mining Journal | Rex on the scent.. grid sampling | London Mining Journal, Vol. 332, No. 8514, Jan. 15, p. 20. | Mauritania | News item, Rex Diamond Mining |
DM1999-1099 1999 | London Mining Journal | Mauritanian kimberlite discovery.... pipe in Tenoumer area | London Mining Journal, Vol. 333, No. 8552, Oct. 8, p. 282. | Mauritania | News item, Rex Mining Co. |
DM1999-1183 1999 | Mining Chronicle. | Ashton and Dia Met form Mauritanian exploration jv | Mining Chronicle., Vol. 4, No. 6, July 1p. | Mauritania | News item, Ashton Mining Ltd., Dia Met |
DM1999-1259 1999 | Northern Miner | Rex finds Mauritania kimberlite.. | Northern Miner, Vol. 83, No. 3, Oct. 11-17, p. | Mauritania | News item, Rex Diamond Mining |
DM1999-1260 1999 | Northern Miner | Rex finds macros at El Hammami | Northern Miner, Vol. 84, No. 48, Jan. 25-31, p. 14. | Mauritania | News item, Rex Diamond Mining |
DM1999-1261 1999 | Northern Miner | Rex Diamond continues diamond hunt.. Tneoumer region | Northern Miner, Vol. 85, No. 21, July 19-25, p. 15. | Mauritania | News item, Rex Diamond Mining |
DM1999-1262 1999 | Northern Miner | Rex expands holdings in Mauritania | Northern Miner, Vol. 85, No. 5, Mar. 29-Apr. 4, p. 14. | Mauritania | News item, Rex Diamond Mining |
DC1999-1666 1999 | Rex Diamond Mining Corp | Rex finds first commercial sized diamonds in Mauritania | Rex Mining, Jan. 11, 2p. | Mauritania | News item - press release |
DC1999-1667 1999 | Rex Diamond Mining Corp | Kimberlite discovery in Mauritania | Rex Diamond Mining Corp., Oct. 4, 1p. | Mauritania | News item - press release |
DC1999-1668 1999 | Rex Diamond Mining Corp | Dr. Luc Rombouts to join the board of REX | Rex Diamond Mining Corp., Sept. 7, 1p. | Mauritania | News item - press release |
DC2000-1800 2000 | Dia Met Minerals Ltd | Mauritania exploration update. Diamondiferous kimberlite intersected. 18 licences 180, 000 sq kM. | Dia Met Minerals Ltd., Aug. 29, 3p. | Mauritania | News item - press release, Ashtn Mining Limited |
DM2000-1193 2000 | Globe & Mail | Rex Diamond, De Beers form Mauritania venture | Globe and Mail, July 29, 1/4p. | Mauritania | News item, Rex Diamond, De Beers |
DM2000-1270 2000 | London Mining Journal | Ashton earnings rise.... | London Mining Journal, Vol. 335, No.8597, Aug.25, p.157-8. | Australia, Mauritania | News item, Ashton Mining Ltd. |
DM2000-1311 2000 | London Mining Journal | Prospects for a brilliant future | London Mining Journal, December, 12p. | Mauritania | Country profile - Mauritania, Geology, exploration, legal |
DM2000-1312 2000 | London Mining Journal | Mauritanian diamond bearing kimberlite... JV on Maqtier | London Mining Journal, Vol. 335, No. 8598, Sept.1, p. 174. | Mauritania | News item, Ashton, Dia Met |
DM2000-1313 2000 | London Mining Journal | De Beers considers Mauritanian venture | London Mining Journal, Vol.335, No.8593, July28, p. 65. | Mauritania | News item, De Beers, Rex Diamond |
DM2000-1314 2000 | London Mining Journal | De Beers secures Mauritanian exploration permit | London Mining Journal, Vol. 335, No. 8600, Sept.15, p.214. | Mauritania | News item, De Beers, Rex Diamond, Ashton |
DM2000-1315 2000 | London Mining Journal | Rex finds new kimberlite in Tenoumer permit | London Mining Journal, Vol. 335, No. 8602, Sept. 29, p. 253. | Mauritania | News item, Rex Diamond Mining |
DM2000-1316 2000 | London Mining Journal | Rex finds more Mauritanian kimberlites. Total of nine so far | London Mining Journal, Vol. 335, No. 8607, Nov.3, p.357. | Mauritania | News item, Rex Diamond Mining |
DM2000-1317 2000 | London Mining Journal | Kimberlite dike swarms for Rex.... east of Tenoumer | London Mining Journal, Vol. 335, No.8613, Dec.15, p.473. | Mauritania | News item, Rex Diamond Mining Co. |
DM2000-1318 2000 | London Mining Journal | Diamonds found in new kimberlite.. Tenoumer property | London Mining Journal, Vol. 335, No.8611, Dec.1, p.433. | Mauritania | News item, Rex Diamond Mining Corp. |
DM2000-1449 2000 | Mining Weekly South Africa | South Africans to develop Mauritania mining... contract for mapping country | Mining Weekly, Sept. 8-14, p.2. (1/2p) | Mauritania | News item, Geology |
DM2000-1526 2000 | Northern Miner | Ashton discovers kimberlite in Mauritania | Northern Miner, Vol. 86, No. 31, Sept. 25-Oct.1, p.B8. | Mauritania | News item, Ashton Mining Limited |
DM2000-1527 2000 | Northern Miner | Rex uncovers pipe... in Tenoumer | Northern Miner, Vol. 86, No. 33, Oct.9-15, p.27. | Mauritania | News item, Rex Diamond Mining |
DC2000-1983 2000 | Rex Diamond Mining Corp | Announces the discovery of a further 8 kimberlites in Mauritania. ( total now 17). | Rex Diamond Mining Corp., Dec. 12, 1p. | Mauritania | News item - press release |
DC2000-1984 2000 | Rex Diamond Mining Corp | Confirms ten wholly owned diamond exploration permits in good order | Rex Diamond Mining, June 9, 1/4p. | Mauritania | News item - press release |
DC2000-1985 2000 | Rex Diamond Mining Corp | Announces that its foruth kimberlite in Mauritania is diamondiferous | Rex Diamond Mining Corp., Nov. 22, 2p. | Mauritania | News item - press release |
DC2000-1986 2000 | Rex Diamond Mining Corp | Trenching points to larger kimberlite body | Rex Diamond Mining Corp., Nov. 23, 1p. | Mauritania | News item - press release |
DC2000-1987 2000 | Rex Diamond Mining Corp | Confirms concentrations of nickel, platinum and palladium in Mauritania.... brief update on diamond exp | Rex Diamond Mining Corporation, Oct. 11, 1p. | Mauritania | News item - press release |
DC2000-1988 2000 | Rex Diamond Mining Corp | Announces the discovery of new kimberlite bodies in Mauritania and the results of drilling second gossan. | Rex Diamond Mining Corp., Oct. 31, 2p. | Mauritania | News item - press release |
DC2000-1989 2000 | Rex Diamond Mining Corp | Announce the discovery of a new kimberlite in 100% owned permit east of Tenoumer in Mauritania. | Rex Diamond Mining, Sept. 25, 2p. | Mauritania | News item - press release |
DM2001-1607 2001 | London Mining Journal | Mauritanian airborne update... | London Mining Journal., Vol. 337, No. 8662, Nov. 30, 413. | Mauritania | News item, Airborne survey - not specific to diamonds |
DM2001-1608 2001 | London Mining Journal | More mauritanian kimberlites for Rex | London Mining Journal, Vol. 336, No. 8627, Mar. 30, p.233. | Mauritania | News item, Rex Diamond Mining |
DS2001-0771 2001 | Memady, E.G. | Mauritania throws down a challenge.... government welcomes companies. | Mining Annual Review, 1p. | Mauritania | Country - overview, economics, mining, Overview - brief |
DM2001-2004 2001 | Northern Miner | Rex changes accounting policy | Northern Miner, Vol. 87, No. 25, Aug. 13-19, p. 6. | South Africa, Mauritania | News item, Rex Diamond Mining |
DM2001-2024 2001 | Paydirt | Mauritania throws down a challenge.... government welcomes companies | Paydirt, March p. 53. | Mauritania | News item, legal |
DS2001-0929 2001 | Pique, A. | Geology of Northwest Africa | Gebruder Borntraeger, 310p. | Morocco, Algeria, Tunisia, Mauritania | Book - table of contents, Structure, stratigraphy, tectonics |
DS2001-0930 2001 | Pique, A., Carpenter, M.S.N. | Geology of Northwest Africa | Gebruder Borntragaeger, www.schweizerbart.de, 310p. approx. $ 80.US | Morocco, Algeria, Tunisia, Mauritania | Book - geology |
DC2001-2608 2001 | Rex Diamond Mining Corp | New drilling programme in Mauitania has commenced. Microdiamonds outlined | Rex Diamond Mining, April 20, 2p. | Mauritania | News item - press release |
DC2001-2609 2001 | Rex Diamond Mining Corp | Rex discovers additional kimberlites and macrodiamonds | Rex Diamond Mining Corporation, March 22, 2p. | Mauritania | News item - press release |
DC2001-2610 2001 | Rex Diamond Mining Corp | NOT SPECIFIC TO DIAMONDS....Results of April-June 2001 drill Program | Rex Diamond Mining, Sept. 20, 2p. | Mauritania | News item - press release |
DC2001-2611 2001 | Rex Diamond Mining Corp | Announces the successful closure of a Euro-private placement.... $ C 2.75 million. | Rex Diamond Mining Corp., Feb. 19, 1p. | South Africa, Mauritania | News item - press release |
DM2002-2104 2002 | London Mining Journal | Mauritania introduces new fiscal regime | London Mining Journal, Vol. 338,8670,Feb.1,p.78,9. | Mauritania | Economics, Legal |
DM2002-2105 2002 | London Mining Journal | GIS based mapping in Mauritania ( Part II). Mauritanides belt, mineral potential | London Mining Journal, Vol. 339, 8700, Aug. 30, p. 148-9. | Mauritania | News item, Geology - not specific to diamonds |
DM2002-2106 2002 | London Mining Journal | GIS mapping in Mauritania | London Mining Journal, Vol. 338, 8690, June 21, pp.458-9. | Mauritania | News item, GIS, geology, mineral potential, Guelb Moghrein, copper |
DS2003-0539 2003 | Hames, W., McHone, J.G., Renne, P., Ruppel, C. | The central Atlantic magmatic province: insights from fragments of Pangea | American Geophysical Union, Geophysical Monograph, No. 136, 330p. | Brazil, Morocco, Guinea, Guyana, Mauritania | Magmatism |
DM2003-1844 2003 | London Mining Journal | Mauritanian minerals... from BGS... 1:500,00 base map | London Mining Journal, Vol. 340, 8740, June 13, p. 400. | Mauritania | News item - press release |
DC2003-2683 2003 | Rex Diamond Mining Corp | Diamond discoveries in Paraguay - new finds in Mauritania - joint venture with Jindal in | Rex Diamond Mining Corporation, Sept. 30, 1p. | Paraguay, Mauritania, India, South Africa | News item - press release |
DS2003-1184 2003 | Rombouts, L. | Distribution of diamonds and kimberlites on the Reguibat Craton, Mauritania | 8 Ikc Www.venuewest.com/8ikc/program.htm, Session 8, POSTER abstract | Mauritania | Blank |
DS200412-0770 2003 | Hames, W., McHone, J.G., Renne, P., Ruppel, C. | The central Atlantic magmatic province: insights from fragments of Pangea. | American Geophysical Union, Geophysical Monograph, No. 136, 330p. | South America, Brazil, Guyana, Africa, Guinea, Mauritania | Magmatism |
DM200412-2712 2003 | London Mining Journal | Mauritanian minerals... from BGS... 1:500,00 base map. | London Mining Journal, Vol. 340, 8740, June 13, p. 400. | Africa, Mauritania | News item |
DC200412-4174 2003 | Rex Diamond Mining Corporation | Diamond discoveries in Paraguay - new finds in Mauritania - joint venture with Jindal in India - resumption of operations in Sou | Rex Diamond Mining Corporation, Sept. 30, 1p. | South America, Paraguay, Africa, Mauritania, South Africa, India | News item - press release |
DS200412-1687 2003 | Rombouts, L. | Distribution of diamonds and kimberlites on the Reguibat Craton, Mauritania. | 8 IKC Program, Session 8, POSTER abstract | Africa, Mauritania | Diamond exploration |
DS200612-1244 2006 | Schofield, D.J., HOrstwood, M.S.A., Pitfield, P.E.J., Crowley, Q.G., Wilkinson, A.F., Sidaty, H.,Ch,O. | Timing and kinematics of Eburnean tectonics in the central Reguibat Shield, Mauritania. | Journal of the Geological Society, Vol. 163, 3, pp. 549-560. | Africa, Mauritania | Tectonics - not specific to diamonds |
DS200712-0956 2007 | Schofield, D.I., Gillespie, M.R. | A tectonic interpretation of Eburean terrane outliers in the Reguelen Shield, Mauritania. | Journal of African Earth Sciences, Vol. 49, 4-5, pp. 179-186. | Africa, Mauritania | Tectonics |
DS201012-0261 2010 | Halls, H.C. | The Reguibat shield, Mauritania: a dyke swarm bonanza? | International Dyke Conference Held Feb. 6, India, 1p. Abstract | Africa, Mauritania, Morocco | Dyke morphology |
DS201112-0578 2011 | Lehbib, S., Arribas, A., Melgarejo, J.C., Martin, R.F. | Rare element minerals of the alkaline suites of the western Sahara. | Peralk-Carb 2011... workshop June 16-18, Tubingen, Germany, Abstract p.96-98. | Africa, Mauritania | Carbonatite |
DS201112-0579 2011 | Lehbib, S., Arribas, A., Melgarejo, J.C., Martin, R.F. | Rare element minerals of the alkaline suites of the western Sahara. | Peralk-Carb 2011... workshop June 16-18, Tubingen, Germany, Abstract p.96-98. | Africa, Mauritania | Carbonatite |
DS201212-0723 2012 | Taylor, C.D., et al. | Mauritania: a greenfields exploration opportunity in northwest Africa. Mentions diamonds p. 15. | SEG Newsletter, No. 91, pp. 16-16. | Africa, Mauritania | Alkaline rocks, magmatism |
DS201312-0899 2013 | Tait, J., Straathof, G., Soderlund, U., Ernst, R.E., Key, R., Jowitt, S.M., Lo, K., Dahmada, M.E.M., N'Diaya, O. | The Ahmeyim Great Dyke of Mauritania: a newly dated Archean intrusion. | Lithos, Vol. 174, pp. 323-332. | Africa, Mauritania | Geochronology |
DS201412-0505 2014 | Leprtre, R., Barbarand, J., Missenard, Y., Leparmentier, F., Frizon de lamotte, D. | Reguibat shield and adjacent basins. | Geological Magazine, Vol. 151, 5, pp. 885-898. | Africa, Mauritania | Geology |
DS201412-0561 2014 | Matton, G., Jebrak, M. | The "eye of Africa" Richat dome, Mauritania: an isolated Cretaceous alkaline-hydrothermal complex. | Journal of African Earth Sciences, Vol. 97, pp. 109-124. | Africa, Mauritania | Alkalic |
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 Coast | Metallogeny |
| 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. |
DS202004-0500 2020 | Ba, M.H., Ibough, H., Lo, K., Youbi, N., Jaffal, M., Ernst, R.E., Niang, A.J., Dia, I., Abdeina, E.H., Bensalah, M.K., Boumehdi, M.A., Soderlund, U. | Spatial and temporal distribution patterns of Precambrian mafic dyke swarms in northern Mauritania ( West African Craton): analysis and results fro remote sensing interpretation, geographical information systems ( GIS), Google Earth TM images, and regiona | Arabian Journal of Geosciences, Vol. 13, , 209 orchid.org/ 0000-002-3287-9537 | Africa, Mauritania | craton |
| Abstract: We used remote sensing, geographical information systems, Google Earth™ images, and regional geology in order to (i) improve the mapping of linear structures and understand the chronology of different mafic dyke swarms in the Ahmeyim area that belongs to the Archean Tasiast-Tijirit Terrane of the Reguibat Shield, West African craton, NW Mauritania. The spatial and temporal distributions with the trends of the dyke swarms provide important information about geodynamics. The analysis of the mafic dyke swarms map and statistical data allow us to distinguish four mafic dyke swarm sets: a major swarm trending NE-SW to NNE-SSW (80%) and three minor swarms trending EW to ENE-WSW (9.33%), NW-SE to WNW-ESE (9.06%), and NS (1.3%). The major swarms extend over 35 km while the minor swarms do not exceed 13 km. The Google Earth™ images reveal relative ages through crossover relationships. The major NE-SW to NNE-SSW and the minor NS swarms are the oldest generations emplaced in the Ahemyim area. The NW-SE-oriented swarm dykes which are cutting the two former swarms are emplaced later. The minor E-W to WSW-ENE swarms are probably the youngest. A precise U-Pb baddeleyite age of 2733?±?2 Ma has been obtained for the NNE-SSW Ahmeyim Great Dyke. This dyke is approximately 1500 m wide in some zone and extends for more than 150 km. The distinct mafic dyke swarms being identified in this study can potentially be linked with coeval magmatic events on other cratons around the globe to identify reconstructed LIPs and constrain continental reconstructions. |
DM202009-1787 2020 | Stockwatch | Metalex Ventures Ltd. Discussion on quarterly report on areas of interest. | stockwatch, Aug. 19, 1p. | Africa, Morocco, Mauritania, Mali | News 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=23s | Africa, 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, Guinea | alluvials |
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.2022.117480 | Africa, Mali, Mauritania | craton |
| 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. |