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SDLRC - Region: Mozambique - All


The Sheahan Diamond Literature Reference Compilation - Technical, Media and Corporate Articles based on Major Region - Mozambique
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]
Mozambique - Technical, Media and Corporate
Posted/
Published
AuthorTitleSourceRegionKeywords
DS1860-1063
1899
Anon.Diamonds; the Mineral Industry During 1898 De Beers, Wesselton, Schuller, Montrose, CarbonadoThe Mineral Industry During 1898, Vol. 7, PP. 273-276.South Africa, Griqualand West, Transvaal, Mozambique, Brazil, EastProduction
DS1983-0152
1983
Bristow, J.W., Saggerson, E.P.A General Account of Karoo Vulcanicity in Southern AfricaGeologische Rundschau, Vol. 72, No. 3, PP. 1015-1060.South Africa, Botswana, Lesotho, Swaziland, Mozambique, ZimbabweRegional Geology
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
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
DS1995-0567
1995
Friedmann, S.J., Burbank, D.W.Rift basins and supradetachment basins: intracontinental extensional endmembersBasin Research, Vol. 7, pp. 109-127Baikal, Mozambique, New JerseyBasins, Tectonics
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
DM1996-2170
1996
Mining MagazineExpanding modular plant capacity DMS fabricated to process up to 150 t/hin modular form.Mining Magazine, Vol. 175, No. 3, Sept. p. 168.Namibia, Angola, Swaziland, Mozambique, ZimbabweNews item, Dowding Reynard and Association Company
DM1997-1314
1997
African MiningThree diamond contracts for Dowding Reynard and Associates..African Mining, Vol. 2, No. 3, May-June p. 52-53.Lesotho, South Africa, MozambiqueNews item, Mining, sampling
DM1998-1699
1998
Chadwick, J.SADC ( South African Development Community)brief overview of countries and activities.Mining Magazine, Vol. 178, No. 5, may pp. RSA1-33.South Africa, Botswana, Angola, Congo, Lesotho, MozambiqueCountry - overview. diamonds, Exploration - activity, economics, discoveries
DM1998-2123
1998
Mining EngineeringAfrican Mining Review..Mining Eng, Vol. 50, No. 5, May pp. 117-120Tanzania, South Africa, Zambia, Congo, MozambiqueOverview - commodities, companies, Economics, activities, success, discoveries
DS2001-0726
2001
Manhica, A.S.T.D., Grantham, Armstrong, Guise, KrugerPolyphase deformation and metamorphism at the Kalahari Craton - Mozambique Belt boundary.Geological Society of London, Special Publication, Special Paper 184, pp. 303-22.South Africa, MozambiqueMetamorphism, Craton
DC200412-3895
2004
Igloo DiamondsInternet diamond retailer Igloo Diamonds partners with Adopt A Minefield to support and fund international landmine clearing opeIgloo Diamonds, Sept. 15, 1p.Africa, MozambiqueNews item - Igloo Diamonds
DS200412-1294
2004
Melluso, L., Censi, P., Perini, G., et al.Chemical and isotopic ( C, O, Sr, Nd) characteristics of the Xiluvo carbonatite ( central western Mozambique).Mineralogy and Petrology, Vol. 80, 3-4, March pp. 201-213.Africa, MozambiqueCarbonatite
DC200512-2720
2005
Motapa Diamonds Inc.Motapa secures prospective ground in Mozambique. East west extension of Limpopo mobile belt.Motapa Diamonds Inc., August 24, 1p.Africa, MozambiqueNews item - press release
DM200712-1952
2007
Diamonds.netRough makes its way into Mozambique.Diamonds.net, Feb. 1, 1/8p.Africa, Zimbabwe, MozambiqueNews item - legal
DS200712-0534
2007
Key, R.M., Bingen, B., Barton, E., Daudi, E.X.E., Manuel, S., Moniz, A.Kimberlites in a Karoo graben of northern Mozambique: tectonic setting, mineralogy and RbSr geochronology.South African Journal of Geology, Vol. 110, 1, pp. 111-124.Africa, MozambiqueGeochronology
DM200712-2414
2006
MinewebMozambique zeros in on illegal mining.Mineweb.net, Nov. 2, 1p.Africa, MozambiqueNews item - legal
DM200712-2415
2006
Mineweb4,500 illegal miners expelled from Mozambique.Mineweb.com, Nov. 15, 1p.Africa, MozambiqueNews item - legal
DC200712-3013
2006
Motapa Diamonds Inc.Motapa second quarter financial statements and interim M D& A.Motapa Diamonds Inc., Oct. 26, 2p.Africa, Lesotho, Namibia, Gabon, MozambiqueNews item - press release
DM200812-1507
2008
AllAfricaMap of mining licences goes on-line. (when????)AllAfrica.com, July 18, 1p.Africa, MozambiqueNews item - map
DM200812-1513
2008
AllAfricaDiamond prospection Save River.AllAfrica.com, July 18, 1p.Africa, MozambiqueNews item - Mpanda, Precios, Geominas,Monte Binga, Manica
DM200812-2008
2008
Diamonds.netMozambique awards eight diamond prospecting claims. Save River valley in Sofala.Diamonds.net, July 18, 1/4p.Africa, MozambiqueNews item - legal
DM200812-2228
2007
Diamonds.net.Mozambique imposes ban on gem trade.Diamonds.net, Dec. 10, 1/4p.Africa, MozambiqueNews item - coloured stones
DS200812-1213
2008
Viola, G., Henderson, I.H.C., Bingen, B., Thomas, R.J., Smethurst, M.A., De Azavedo, S.Growth and collapse of a deeply eroded orogen: insights from structural, geophysical, and geochronological constraints on Pan-African evolution of NE Mozambique.Tectonics, Vol. 27, TC5009Africa, MozambiqueGeochronology
DC200912-2289
2009
African Queen Mines ltd.African Queen announces private placement.African Queen Mines lTd., April 20, 1p.Africa, Mozambique, NamibiaNews item - press release
DS200912-0103
2009
CGSNew geological map of Mozambique.fhartze @geoscience.org.za, 1: 1,000,000 DVDAfrica, MozambiqueMap
DM200912-1586
2009
Diamonds.netIllegal diamond dealers move into Mozambique.Diamonds.net, Nov. 16, 1p.Africa, MozambiqueNews item - legal
DM200912-2015
2009
London Mining JournalMozambique - overview and brief mention of diamonds p. 23.London Mining Journal, Oct. 30, pp. 16-18.Africa, MozambiqueNews item - overview
DS200912-0634
2008
Robinson, P., Solli, A., Engvik, A., Erambert, M., Bingen, B., Schiellerup, H., Njange, F.Solid solution between potassic obertitie and potassic fluoro magnesio arfvedsonite in a silica rich lamproite from northeast Mozambique.European Journal of Mineralogy, Vol. 20, 6, pp. 1011-1018.Africa, MozambiqueLamproite
DM201012-1550
2009
Diamonds.netMozambique confirms illegal sale of diamonds from Zimbabwe. Manica district.Diamonds.net, Dec. 16, 1/2p.Africa, Mozambique, ZimbabweNews item - legal
DM201012-1551
2010
Diamonds.netMozambique Zimbabwe border town gets a cut of diamond action. ManicaDiamonds.net, Jan. 6, 2p.Africa, Mozambique, ZimbabweNews item - legal
DS201012-0248
2010
Grantham, G.H., Manhica, A.D.S.T., Armstrong, R.A., Kruger, F.J., Loubser, M.New SHRIMP, Rb/Sr and Sm/Nd isotope and whole rock chemical dat a from central Mozambique and western Dronning Maud Land: implications for eastern KalahariJournal of African Earth Sciences, Vol. 59, 1, pp.74-100.Africa, Mozambique, AntarcticaCraton, amalgamation of Gondwana
DM201012-2276
2010
The Israeli Diamond IndustryMozambique seeking to join Kimberley Process.israelidiamond.co.il, Sept. 20, 1/8p.Africa, MozambiqueNews item - KP
DM201112-1781
2011
Diamonds.netMozambique prepares to join the Kimberley process.Diamonds.net, June 13, 1p.Africa, MozambiqueNews item - KP
DM201112-1929
2011
Diamonds.netDiamond explorers target Mozambique. Niassa, Sofala, Manica, Inhambane, Gaza and Maputo provinces.Diamonds.net, June 10, 1p.Africa, MozambiqueNews item - Saraiva, Metalmoz, Monte Binga, Zamex
DC201112-2862
2011
Kimberley Rare EarthsKimberley Rare Earths dials into pegmatite rare earth project in Mozambique.Kimberley Rare Earths, Sept. 29, 1p.Africa, MozambiqueNews item - press release
DM201203-1009
2012
Diamonds.netMozambique seeks quick entry into Kimberley Process. Millions of dollars worth of diamonds from Zimbabwe ar passing illicity through Manica.Diamonds.net, Feb. 21, 1/2p.Africa, MozambiqueNews item - KP
DM201212-2318
2012
Rough-PolishedMozambique: Is a diamond driven conflict in the offing?rough-polished.com, Oct. 29, 1p.Africa, MozambiqueNews item - legal
DC201304-2891
2013
Botswana Diamonds Plc.Option agreement on two prospecting licences Save River, Mozambique.Botswana Diamonds Plc., March 19, 1p.Africa, MozambiqueNews item - press release
DM201304-1450
2013
Diamonds.netBotswana Diamonds enters option agreement with Morminas.Diamonds.net, March 19, 1/4p.Africa, MozambiqueNews item - Botswana Diamonds
DC201305-2927
2013
Botswana Diamonds Plc.Option agreement on an additional prospecting licence - Save Rver, Mozambique. MorminasBotswana Diamonds Plc., April 11, 1p.Africa, MozambiqueNews item - press release
DM201305-1569
2013
Creamers Mining WeeklyThird licence added to Botswana Diamonds/Morminas agreement. Save RiverCreamers Mining Weekly, April 11, 1/2p.Africa, MozambiqueNews item - Botswana Diamonds
DM201310-2322
2013
AllAfricaAngola: Mozambique wants diamond cooperation with Angola.Allafrica.com, August 23, 1/4p.Africa, Angola, MozambiqueNews item - economics
DM201402-1928
2014
Rough-PolishedBotswana backs out of Mozambique diamond project.rough-polished.com, Jan. 22, 1/4p.Africa, MozambiqueNews item - Botswana Diamonds
DM201403-1957
2014
Rough-PolishedMozambique reviewing fiscal regime, diamond royalties to marginally go up.rough-polished.com, Feb. 7, 1/4p.Africa, MozambiqueNews item - legal
DM201404-1061
2014
AllAfricaMozambican Kimberley Process team visits Catoca Company.Allafrica.com, March 14, 1/4p.Africa, Angola, MozambiqueNews item - Catoca
DM201405-1157
2014
Creamers Mining WeeklyGemfields doing "De Beers equivalent" in emeralds - rubies PallinhurstCreamers Mining Weekly, April 11, 1p.Africa, Zambia, MozambiqueNews item - Pallinhurst
DM201405-1160
2014
Creamers Mining WeeklyGemfields secures $ 15 m unsecured loan from key shareholder Pallinhurst Resources for emerald/ruby.Creamers Mining Weekly, April 17, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201406-1100
2014
Angola PressAngola and Mozambique sign memorandum in geological sector.Angola Press, May 20, 1/2p.Africa, Angola, MozambiqueNews item - Endiama
DM201409-2503
2014
The Israeli Diamond IndustryAustralian miner OGI Group ( previously named Golden Gate Petroleum) moves in on Mozambique diamonds.israelidiamond.co.il, Aug. 7, 1/4p.Africa, Mozambique, AustraliaNews item - OGI Group
DC201410-2806
2014
OGI GroupOGI Group is set to acquire 51.8% stake in a diamond license in Mozambique, through acquiring shares in Sese Diamonds ( Pty) Ltd. Save RiverOGI Group, Sept. 10, 1p.Africa, MozambiqueNews item - press release
DC201412-2807
2014
OGI GroupThe company expects to provide notice of the acquisition of the Save River diamonds project and is finalizing a prospectus to raise money.OGI Group, Nov. 4, 1/2p.Africa, MozambiqueNews item - press release
DC201502-1628
2015
OGI GroupIncrease in underwriting commitment and commencement of trial mining program Save River diamonds project.OGI Group Limited, Jan. 7, 1p.Africa, MozambiqueNews item - press release
DM201504-0912
2015
MiningmxGemfields to add sapphires to product suite. ( emeralds)Miningmx.com, Mar. 11, 1/4p.Africa, Zambia, MozambiqueNews item - Gemfields
DS201506-0258
2015
Chapin, M.,Pardieu, V., Lucas, A.Mozambique: a ruby discovery for the 21st. Century. MontepuezGems & Gemology, Vol. 51, 1, pp. 44-54.Africa, MozambiqueDeposit - ruby
DM201507-0689
2015
Diamonds.netMustang Resources recovers diamonds in Mozambique.Diamonds.net, June 16, 1/2p.Africa, MozambiqueNews item - Mustang
DM201507-1222
2015
Rough-PolishedMustang Resources recovers diamonds in Mozambique. Save Riverrough-polished.com, June 18, 1/4p.Africa, MozambiqueNews item - Mustang
DC201508-1608
2015
Mustang Resources Ltd.Update on Save River project.Mustang Resources , July 15, 2p.Africa, MozambiqueNews item - press release
DC201508-1609
2015
Mustang Resources Ltd.Save River IR.Mustang Resources , July 24pp.Africa, MozambiqueNews item - press release
DC201511-2395
2015
Mustang Resources Ltd.Continuing diamond recovery and expansion at Save River.Mustang Resources Ltd., Oct. 1, 2p.Africa, MozambiqueNews item - press release
DC201511-2396
2015
Mustang Resources Ltd.Save River diamond project - update.Mustang Resources Ltd., Oct 19, 18p.Africa, MozambiqueNews item - Mustang
DM201512-2236
2015
Diamonds.netAustralia's Mustang Resources raises $ 4.1 million to progress Mozambique projects. Save RiverDiamonds.net, Nov. 25, 1/4p.Africa, MozambiqueNews item - Mustang
DM201607-2553
2016
Diamonds.netGemfields ruby sale fetches $ 44m.Diamonds.net, June 20, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201608-2600
2016
Creamers Mining WeeklyMozambique reports unquantified diamond discovery Massangena district of Gaza province.Creamers Mining Weekly, July 20, 1/4p.Africa, MozambiqueNews item - diamond
DM201608-1499
2016
Diamonds.netGemfields ramps up ruby output.Diamonds.net, Aug. 1, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201608-2614
2016
Diamonds.netGemfields closes loan deal to hike ruby output.Diamonds.net, July 5, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201608-1546
2016
MacauhubMining companies find diamonds in Mozambique.. Massagena ( Gaza). www.macauhub.com.mo, July 12, 1/2p.Africa, MozambiqueNews item - KP
DM201608-1551
2016
MiningmxGemfields has raised $ 65 millionMiningmx.com, July 4, 1p.Africa, MozambiqueNews item - Gemfields
DM201610-1924
2016
Creamers Mining WeeklyMozambique seeks Kimberley Process certification to export newly found diamond wealth.Creamers Mining Weekly, Aug. 30, 1/4p.Africa, MozambiqueNews item - KP
DM201610-2000
2016
Rough-polishedMozambique eyes commercial diamond mining. rough-polished.com, Aug. 29, 1/4p.Africa, MozambiqueNews item - KP
DM201612-2440
2016
Rough-polishedUAE KP Chair talks with Presidnet Nyus on Mozambique's KP candidacyrough-polished.com, Nov. 7, 1/4p.Africa, MozambiqueNews item - KP
DM201701-0155
2016
Rough-polishedGemfields gets $ 30.4 m during ruby auction.rough-polished.com, Dec. 27, 1/4p.Africa, MozambiqueNews item - Gemfields
DC201704-0791
2017
Mustang Resources Ltd.Summary of ruby project Montepuez p. 4,5,6,7.Mustang Resources Limited, March 15, 4p.Africa, MozambiqueNews item - press release
DS201704-0651
2017
Vertriest, W., Pardieu, V.Update on gemstone mining in northern Mozambique. RubyGems & Gemology, Vol. 52, 4, pp. 404-409.Africa, MozambiqueGemstones - ruby

Abstract: Northern Mozambique (figure 1) has gained attention for its rubies since a major discovery near Montepuez in 2009 (see McClure and Koivula, 2009; Pardieu and Lomthong, 2009; Pardieu and Chauvire, 2012; Pardieu et al., 2009, 2013; Hsu et al., 2014). Until the arrival of Gemfields in 2012, nearly all the production from this deposit came from unlicensed miners, known as garimpeiros. Between 2012 and 2016, Gemfields became a force in the ruby trade, supplying the market through regular auctions in Singapore and Jaipur. In 2016, two new players acquired ruby mining licenses around Montepuez: Mustang Resources and Metals of Africa. During a summer 2016 GIA field expedition, we visited these new sites. We also spent time at the Gemfields operation, in order to follow the development of what is already the world’s largest ruby mine. We also visited an interesting new pink spinel and tourmaline deposit near Ocua.
DS201705-0821
2017
Chauque, F.R., Cordani, U.G., Jamal, D.L., Onoe, A.T.The Zimbabwe Craton in Mozambique: a brief review of its geochronological pattern and its relation to the Mozambique Belt.Journal of African Earth Sciences, Vol. 129, pp. 366-379.Africa, MozambiqueCraton, Zimbabwe

Abstract: The eastern margin of the Zimbabwe Craton, along the Mozambique-Zimbabwe border, includes the oldest rocks of west-central Mozambique constituting a large terrain of granite-greenstone type dated between 3000 and 2500 Ma. These rocks consist mainly of gneisses and granitoid rocks of tonalitic-trondhjemitic-granodioritic composition belonging to the Mudzi Metamorphic Complex in the northern part and to the Mavonde Complex in the southern part. The latter is associated with a granite-greenstone terrain, which includes the eastern part of Mutare-Odzi-Manica greenstone belt. A volcano-sedimentary sequences cover, belonging to the apparently Mesoproterozoic and Paleoproterozoic Umkondo and Gairezi groups respectively was deposited along the eastern margin of the craton and is exposed in the territory of Mozambique. The Umkondo minimum age is marked by intrusive dolerite in Zimbabwe dated at 1100 Ma while for the Ghairezi it is still not well established. The Gairezi Group was subjected to progressive metamorphism of Pan-African age. At the margin of the Zimbabwe Craton, in its northern part, metasedimentary units occur representing a passive margin of Neoproterozoic age. They make up the Rushinga Group, which includes felsic metavolcanic rocks dated at ca.800 Ma. Granulites and medium- to high-grade paragneisses, and migmatites of the Chimoio, Macossa and Mungari Groups of Neoproterozoic metamorphic age, overly the ortho-metamorphic pre-existing rock of ca. 1100 Ma, which belongs to the Báruè Magmatic Arc. They characterize the N-S trend Mozambique Belt, which appears to the east of the craton tectonically juxtaposed on the Archean rocks. The maximum age of deposition of these rocks, indicated by U-Pb dating of detrital zircons, is ca. 700 Ma and their minimum age is limited by a few monzonitic Cambrian intrusions dated at ca. 500 Ma. The Neoproterozoic bimodal Guro Suite, dated at ca. 850 Ma and composed of felsic and mafic members characterizes the east-dipping outer rim of the craton margin in the north. The felsic member comprises the Serra Banguatere aplitic granite gneiss-migmatite and the mafic member consists of the Magasso metagabbro and mafic gneiss-migmatite. The geochemical signature and bimodality are all characteristics of anorogenic, A-type granites. The tectono-thermal effects of the Pan-African orogenic event, of approximately 500 Ma, are visible along the margin of the Zimbabwe Craton. Deformation and metamorphism are progressive from the craton towards the belt, from greenschist facies to granulite facies. The main suture in the study area shall be placed along the frontal thrusts of the Mungari and Macossa/Chimoio nappes of Neoproterozoic to Cambrian age. To the west of the suture the rejuvenated margin of the craton occurs, indicated by K-Ar dating. To the east, the Mozambique Belt occurs with its paragneisses of the Neoproterozoic overlaying the Mesoproterozoic granitoids of the Báruè magmatic arc.
DM201705-0969
2017
Republic of MiningMozambique interested in Botswana mining experience.allafrica.com, April 25, 1/4p.Africa, MozambiqueNews item - economics
DM201707-1461
2017
Mining.comGemfields steps up fight against takeover by largest investor ( Pallinhurst). Emeralds and rubiesmining.com, May 31, 1/2p.Africa, Mozambique, ZambiaNews item - Gemfields
DM201710-2361
2017
Investing NewsRuby producer Mustang getting ready for first auction in October.investing news.com, Sept. 7, 1/4p.Africa, MozambiqueNews item - Mustang
DM201710-2395
2017
Rough-polishedMustang set for first auction of Mozambique rubies in October.roughdiamond, Sept. 4, 1/4p.Africa, MozambiqueNews item - Mustang
DM201712-2762
2017
Creamers Mining WeeklyMustang to review strategy following disappointing ruby maiden tender. Montepuezcreamersmining weekly.com, Nov. 7, 1/4p.Africa, MozambiqueNews item - Mustang
DM201712-2865
2017
Rough-polishedGemfields records highest revenue figure from rubies sale. Montepuezroughpolished.com, Nov. 27, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201712-2878
2017
The Israeli diamond industryMustang's ruby auction falls flat.israelidiamond.co.il, Nov. 9, 1/4p.Africa, MozambiqueNews item - Mustang
DM201802-0292
2018
Creamers Mining WeeklyMustang secures A$19.95 m from US investor for Mozambique mines. Arena Investors.creamersmining weekly.com, Jan. 8, 1p.Africa, MozambiqueNews item - Mustang Resources
DM201802-0334
2018
Investingnews networkFura gems: Ruby and emeralds.investingnews.com, Jan. 3, 1/4p.Africa, Mozambique, South America, ColombiaNews item - Fura
DM201802-0363
2018
Rough-polishedFura Gems tempting India with rubies from Mozambique and emeralds for Colombia.rough-polished.com, Jan. 15, 1/4 p.Africa, Mozambique, South America, Colombia, IndiaNews item - Fura Gems
DM201804-0775
2018
Creamers Mining WeeklyMustang closes Mauritius sales office, opens Thailand facility as part of new marketing process. Montepuezcreamersmining weekly.com, Mar. 6, 1/4p.Africa, MozambiqueNews item - Mustang
DM201805-1136
2018
Rough-polishedPallinghurst wants to build Gemfields into 'De Beers of coloured gemstones'.rough-polished, Apr. 18, 1/4p.Africa, Zambia, MozambiqueNews item - Gemfields
DM201807-1600
2018
Diamonds.netGemfields sells $ 72 m at record auction. diamonds.net, June 11, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201807-1630
2018
Mining.comEmeralds and rubies producer Fura Gems changes look. Coscuezmining.com, June 1, 1/4p.South America, Colombia, Africa, MozambiqueNews item - Fura Gems
DC201808-1955
2018
De Beers GroupDe Beers Group to move 200 elephants from South Africa to Mozambique in major conservation effort. ( From Venetia Limpopo Nature Reserve).debeersgroup, July 23, 1p.Africa, MozambiqueNews item - press release
DM201808-1880
2018
London Mining JournalFura's buys Mustang Mozambique holdings. Montpurez Emeraldslondonmining journal.com, July 16, 1/4p.Africa, MozambiqueNews item - Fura
DM201809-2144
2018
Creamers Mining WeeklyMozambique's ruby mining goes from wild west to big business.creamersmining weekly, Aug. 13, 1/4p.Africa, Mozambiquenews item - Gemfields
DS201810-2356
2018
Mining News DigestSwiss scientists developing method to detect low-temperature heated rubies from Mozambique. Montepurezmining.com, Sept. 13, 2p.Africa, Mozambiqueruby
DM201811-2693
2018
Rough-polishedGemfields confident of growth Zambia and Mozambique.rough-polished.com, Oct. 1, 1/4p.Africa, Zambia, MozambiqueNews item - Gemfields
DM201811-2708
2018
Rough-polishedMozambique ruby rush fuels illegal mining.rough-polished.com, Oct. 10, 1/4p.Africa, MozambiqueNews item - legal
DM201811-2732
2018
The Israeli Diamond IncdustrySSEF research studies low-temperature heating in rubies.israelidiamond.co.il, Oct. 10, 1p.Africa, MozambiqueNews item - SSEF
DS201901-0037
2018
Grantham, G., Eglinton, B., Macey, P.H., Ingram,B., Radeneyer, M., Kaiden, H., Manhica, V.The chemistry of Karoo age andesitic lavas along the northern Mozambique coast, southern Africa and possible implications for Gondwana breakup.South African Journal of Geology, Vol. 121, pp. 271-286.Africa, Mozambiquegeodynamics

Abstract: Major, trace, radiogenic isotope and stable isotope data from lavas along the northeastern coast of Mozambique are described. The whole rock composition data demonstrate that the rocks are dominantly andesitic with compositions typical of calc-alkaline volcanic rocks from arc environments. SHRIMP U/Pb data from zircons indicate that the zircons are xenocrystic, having ages of between 500 Ma and 660 Ma, with the age of the lava constrained by Rb/Sr data at ~184 Ma. Strontium, Nd and Pb radiogenic isotope data support an interpretation of extensive mixing between a Karoo age basaltic magma (dolerite) from Antarctica and continental crust similar in composition to the Mozambique basement. Oxygen isotope data also imply a significant crustal contribution to the lavas. Possible tectonic settings for the lavas are at the margin of a plume or from a locally restricted compressional setting during Gondwana breakup processes.
DM201901-0177
2018
Rough-polishedPurchase price for Mustang, Regius ruby assets almost halved. Rough-polished, Dec. 7, 1/4p.Africa, MozambiqueNews item - Fura Gems
DM201901-0182
2018
Rough-polishedMozambique to certify diamonds.Rough-polished, Dec. 10, 1/4p.Africa, MozambiqueNews item - legal
DM201902-0445
2019
Rough-polishedGemFields settles 5.8m lb claim to protect Mozambique ruby mine. ( people near Montepuez mine)rough-polished.com, Jan. 30, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201903-0570
2019
Creamers Mining WeeklyGemfields unveils new $ 15 m automated ruby sort house in Mozambique. Montepurez creamersmining weekly.com, Feb. 22, 1/4p.Africa, MozambiqueNews item - Gemfields
DM201904-0841
2019
Creamers Mining WeeklyGemfields mulls London listing, looks back on challenging 2018. creamersminingweekly, Mar. 25, 1/4p.Africa, Mozambique, Zambia, EthiopiaNews item - Gemfields
DM201904-0953
2019
Rough-polishedGemfields incurs $ 60 m loss despite huge revenue in 2018.rough-polished, Mar. 27, 1/4p.Africa, Mozambique, Zambia, EthiopiaNews item - Gemfields
DS201904-0780
2019
Sinha, S.T., Saha, S., Longacre, M., Basu, S., Jha, R., Mondal, T.Crustal architecture and nature of continental breakup along a transform margin: new insights from Tanzania-Mozambique margin.Tectonics, in press availableAfrica, Tanzania, Mozambiquerifting

Abstract: The Tanzania?North Mozambique continental margin is a transform segment associated with Davie Fracture Zone (DFZ). The DFZ is described as an elongated linear oceanic fracture zone, commonly linked with the breakup between Eastern and Western Gondwana. We conducted a synthesized study using gravity, magnetic and seismic data presenting the crustal architecture, geometry and the kinematic nature of continental breakup along a transform margin. The Crustal nature of DFZ, its role in forming kinematic linkage between two extensional margins during continental breakup processes is focus of our study. The two extensional margins, Somalia?Majunga and North Mozambique?Antarctica were linked via a 2600 km long dextral transform segment, partially overlapping with DFZ. Absence of classical rift indicators, weak signs of hyperextension, abrupt ocean?continent boundary (OCB) suggests transform margin architecture. We redefined this feature as the Davie Transform System (DTS). The nature of deformation varies form transtensional pull?apart in Tanzania to almost pure strike?slip in North Mozambique. The southern transform segment exhibits abrupt change in ocean continent transition with a narrow zone of continental extension. This variation is recognized through the newly interpreted OCB along this entire transform segment. Notably, within large pull?apart systems in the north, presence of fossilized incipient spreading center suggest that the extension had reached at quite advanced stages, characterized by significant thermal weakening as a consequence of strong magmatic activity. Through a series of reconstruction snapshots, we show the geodynamic evolution along the Tanzania?North Mozambique margin explaining the role of DTS in the southward movement of Madagascar.
DM201906-1394
2019
Diamonds.netGemfield investigates slavery at Ruby deposit. Illegals at Montepuez.diamonds.net, May 6, 1/4p.Africa, MozambiqueNews item - Gemfields
DC201907-1747
2019
GemfieldsGemfields rakes in $50 million at rubies auction. Montepurez Gemfields, June 21, 1p.Africa, MozambiqueNews item - press release
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.
DM201908-1844
2019
Creamers Mining WeeklyDe Beers reports successful second translocation of elephants to Zinave Parks in Mozambique - from Venetia Limpopo reserve.creamers miningweekly.com, July 12, 1/4p.Africa, MozambiqueNews item - De Beers
DC201908-1987
2019
De Beers GroupDe Beers Group progresses pioneering 'moving giants' elephant conservation initiative in Africa. ( from SA to Mozambique).De Beers Group.com, Juy 11, 1p.Africa, MozambiqueNews item - press release
DS201908-1811
2019
Santosh, M., Maruyama, S., Sawaki, Y., Meert, J.G.The Cambrian explosion: plume-driven birth of the second ecosystem on Earth. Gondwana Research, doi.org/10.1016 /j.gr.2013.03.013 21p. PdfAfrica, Mozambiquetectonics

Abstract: The birth of modern life on Earth can be linked to the adequate supply of nutrients into the oceans. In this paper, we evaluate the relative supply of nutrients into the ocean. These nutrients entered the ocean through myriad passageways, but primarily through accelerated erosion due to uplift. In the ‘second ecosystem’, uplift is associated with plume-generation during the breakup of the Rodinia supercontinent. Although the evidence is somewhat cryptic, it appears that the second ecosystem included the demospongia back into the Cryogenian (~ 750 Ma). During the Ediacaran-Cambrian interval, convergent margin magmatism, arc volcanism and the closure of ocean basins provided a second pulse of nutrient delivery into the marine environment. A major radiation of life forms begins around 580 Ma and is represented by the diverse and somewhat enigmatic Ediacaran fauna followed by the Cambrian Explosion of modern phyla during the 540-520 Ma interval. Tectonically, the Ediacaran-Cambrian time interval is dominated by the formation of ultra-high pressure (UHP), high pressure (HP) and ultra-high temperature (UHT) orogenic belts during Gondwana orogenesis. Erosion of this extensive mountainous region delivered vast nutrients into the ocean and enhanced the explosiveness of the Cambrian radiation. The timing of final collisional orogeny and construction of the mountain belts in many of the Gondwana-forming orogens, particularly some of those in the central and eastern belts, post-date the first appearance of modern life forms. We therefore postulate that a more effective nutrient supply for the Cambrian radiation was facilitated by plume-driven uplift of TTG crust, subsequent rifting, and subduction-related nutrient systems prior to the assembly of Gondwana. In the outlined scenario, we propose that the birth of the ‘second ecosystem’ on our planet is plume-driven.
DM201909-2114
2019
AllafricaMozambique refining details for export of diamonds.mozambique.com, Aug. 7, 1/4p.Africa, MozambiqueNews item - KP
DS201909-2099
2019
Turunen, S.T., Luttinen, A.V., Heinonen, J.S., Jamal, D.L.Luenha picrites, central Mozambique - messengers from a mantle plume source of Karoo continental flood basalts?Lithos, Vol. 346-347, 16p. PdfAfrica, Mozambiquepicrites

Abstract: We present geochemical and isotopic (Nd, Sr) data for a picrite lava suite from the Luenha River and adjacent areas in Mozambique. The Luenha picrites represent a previously unknown type of picrites related to the Karoo large igneous province (LIP) and are distinguished by their notably low TiO2 contents (0.3-1.0?wt%) and coupling of high Nb/Y with low Zr/Y and Sm/Yb. Relatively high CaO and low Zn/Fe point to a peridotitic mantle source. Contamination-sensitive incompatible element ratios show that one lava flow is likely to be uncontaminated by the crust and its composition suggests a mantle source with primitive mantle-like incompatible element ratios and mildly depleted isotopic ratios (initial 87Sr/86Sr?=?0.7041 and ?Nd?=?+1.4 at 180?Ma). The primary melts of the Luenha picrites had MgO contents in the range of 13-21?wt%. Our preferred estimate for a primary melt composition (MgO?=?18?wt%) resembles experimental melts of fertile mantle peridotite at 3-4?GPa and indicates liquidus temperature of 1445-1582?°C. Geochemical similarities suggest the Luenha picrites were generated from the same overall primitive mantle-like reservoir that produced the main volume of Karoo flood basalts in the Karoo, Kalahari, and Zambezi basins, whereas the previously identified enriched and depleted (upper) mantle sources of Karoo picrite suites (Mwenezi, Antarctica) were subordinate sources for flood basalts. We propose that the Luenha picrites record melting of a hot, chemically primitive mantle plume source that may have been rooted in the sub-African large low shear velocity province boundary and that such a source might have been the most significant magma source in the Karoo LIP.
DS201909-2102
2019
Vertriest, W., Saeseaw, S.A decade of ruby from Mozambique: a review.Gems & Gemology, Vol. 55, 7, pp. 162-183.Africa, MozambiqueRuby

Abstract: In less than a decade, Mozambique has become the world’s most productive source for gem-quality ruby. Since the discovery in 2009, GIA has followed these deposits from the front lines, collecting data in the field and in the laboratory. The development of the deposit in Montepuez has been extremely interesting, with different players involved and different types of material unearthed. This article provides a summary and overview of the current knowledge about Mozambican ruby, including the history of mining and the market impact, as well as a comprehensive gemological characterization and discussion of the most common treatments applied to the stones. Much of the information in this article is based on the authors’ observations in the field and market as well as several publications (Pardieu et al., 2009, 2013, 2015; Saeseaw et al., 2018).
DM201910-2336
2019
Creamers Mining WeeklyGemfields delivers varied interim results, remains intent on London listing.creamersminingweekly.com, Sept. 20, 1/4p.Africa, MozambiqueNews item - Gemfields
DS201910-2291
2019
Phys.orgFirst direct evidence for a mantle plume origin of Jurassic flood basalts in southern Africa. SummaryPhys.org.com, Aug. 26, 2p.Africa, Mozambiquepicrites

Abstract: A group of geochemists suggests they have found the smoking gun in the Karoo magma province. Their new article reports the discovery of primitive picrite lavas that may provide the first direct sample of a hot mantle plume underneath southern Africa in the Jurassic period.
DM201910-2442
2019
Rough-polishedGemfields expects interim profit to dip. Montepuez rough-polished.com, Sept. 23, 1/4p.Africa, MozambiqueNews item - Gemfields
DS201910-2305
2019
Turunen, S.T.Luenha picrites, central Mozambique - messengers from a mantle plume source of Karoo continental flood basalts.Lithos, doi: 10.1016/j.lithos .2019.105152Africa, Mozambiquepicrites

Abstract: We present geochemical and isotopic (Nd, Sr) data for a picrite lava suite from the Luenha River and adjacent areas in Mozambique. The Luenha picrites represent a previously unknown type of picrites related to the Karoo large igneous province (LIP) and are distinguished by their notably low TiO2 contents (0.3-1.0?wt%) and coupling of high Nb/Y with low Zr/Y and Sm/Yb. Relatively high CaO and low Zn/Fe point to a peridotitic mantle source. Contamination-sensitive incompatible element ratios show that one lava flow is likely to be uncontaminated by the crust and its composition suggests a mantle source with primitive mantle-like incompatible element ratios and mildly depleted isotopic ratios (initial 87Sr/86Sr?=?0.7041 and ?Nd?=?+1.4 at 180?Ma). The primary melts of the Luenha picrites had MgO contents in the range of 13-21?wt%. Our preferred estimate for a primary melt composition (MgO?=?18?wt%) resembles experimental melts of fertile mantle peridotite at 3-4?GPa and indicates liquidus temperature of 1445-1582?°C. Geochemical similarities suggest the Luenha picrites were generated from the same overall primitive mantle-like reservoir that produced the main volume of Karoo flood basalts in the Karoo, Kalahari, and Zambezi basins, whereas the previously identified enriched and depleted (upper) mantle sources of Karoo picrite suites (Mwenezi, Antarctica) were subordinate sources for flood basalts. We propose that the Luenha picrites record melting of a hot, chemically primitive mantle plume source that may have been rooted in the sub-African large low shear velocity province boundary and that such a source might have been the most significant magma source in the Karoo LIP.
DM201911-2584
2019
AllafricaNyushi hopes for cooperation with Russia.allafrica.com, Oct. 24, 1/4p.Russia, Africa, MozambiqueNews item - Alrosa
DM202001-0077
2019
Diamonds.netGemfields debuts traceable ruby program.diamonds.net, Dec. 17, 1/4p.Africa, MozambiqueNews item - Gemfields
DS202003-0355
2019
Palke, A.C., Saeseaw, S., Renfro, N.D., Sun, Z., McClure, S.F.Geographic origin of ruby.Gems & Gemology, Vol. 55, 4, pp. 580-579.Global, Asia, Myanmar, Vietnam, Cambodia, Thailand, Africa, Madagascar, Mozambique, Europe, Afghanistanruby

Abstract: Over the last several decades, geographic origin determination for fine rubies has become increasingly important in the gem trade. In the gemological laboratory, rubies are generally broken down into two groups based on their trace element chemistry: marble-hosted (low-iron) rubies and high-iron rubies. High-iron rubies are usually a straightforward identification based on their inclusions and trace element profiles. Marble-hosted rubies can be more challenging, with some deposits showing overlap in some of their inclusion scenes. But many marblehosted rubies, especially Burmese stones from Mogok and Mong Hsu, can be accurately identified based on their internal features and trace element profiles. This contribution will outline the methods and criteria used at GIA for geographic origin determination for ruby.
DM202005-0793
2020
Creamers Mining WeeklyGemfields beefs up security at Moz operation after spate of attacks. Montepuez rubyCreamers Mining Weekly, April 22, 1/4p.Africa, MozambiqueNews item - Gemfields
DM202005-0816
2020
MacauhubAngola, Mozambique and Cabo Verde among the African countries where COVID-19 will peak later. macauhub.com, April 3, 1/2p.Africa, Angola, MozambiqueNews item - markets
DM202005-0817
2020
MacauhubSuspension of Mozambian ruby auctions will affect performance of Gemfields.macauhub.com, April 8, 1/4p.Africa, MozambiqueNews item - Gemfields
DM202005-0831
2020
MiningmxGemfields beefs up security at Moz operation after spate of attacks. Montepuez ruby after Govt releases 150 illegal minersminingmx.com, April 23, 1/4p.Africa, MozambiqueNews item - Gemfields
DM202005-0870
2020
Rough-polishedGem Diamonds Q1 revenue, output slump as Covid-19 wreak havoc. Rough-polished.com, April 22, 1/4p.Africa, MozambiqueNews item - Gem Diamonds
DM202005-0876
2020
Rough-polishedFura Gems acquires ruby licence in Mozambique.Rough-polished.com, April 27, 1/4p.Africa, MozambiqueNews item - Fura
DS202006-0939
2020
Moulin, M., Aslainian, D., Evain, M., Lepetre, A., Schnurle, P., Verrier, F., Thompson, J., De Clarens, P., Leroy, S., Dias, N.Gondwana breakup: messages from the north Natal Valley.Terra Nova, Vol. 32, 3, pp. 205-210.Africa, Mozambiquegeophysics - seismics

Abstract: The Natal Valley, offshore Mozambique, is a key area for understanding the evolution of East Gondwana. Within the scope of the integrated multidisciplinary PAMELA project, we present new wide?angle seismic data and interpretations, which considerably alter Geoscience paradigms. These data reveal the presence of a 30?km?thick crust that we argue to be of continental nature. This falsifies all the most recent palaeo?reconstructions of the Gondwana. This 30?km?thick continental crust 1,000 m below sea level implies a complex history with probable intrusions of mantle?derived melts in the lower crust, connected to several occurrences of magmatism, which seems to evidence the crucial role of the lower continental crust in passive margin genesis.
DM202008-1538
2020
Rough-polishedFura concludes ruby transaction in Mozambique.rough-polished.com, July 15, 1/4p.Africa, MozambiqueNews item - Fura
DM202008-1558
2020
Rough-polishedMozambique goes after gemstone trafficking networks in Cabo Delgabo. Montepuezrough-polished.com, July 24, 1/4p.Africa, MozambiqueNews item - legal
DM202009-1684
2020
Bulawayo NewsZACC busts illegal diamond syndicate.bulawayonews.com, Aug. 10, 1/4p.Africa, Mozambique, Democratic Republic of CongoNews item - legal
DM202009-1770
2020
Rough-polishedGemfields progresses with Montepuez ruby mining resettlement despite Covid-19 induced delays.rough-polished.com, Aug. 18, 1/4p.Africa, MozambiqueNews item - Gemfields
DM202012-2340
2020
StockwatchFura gems has gone private.stockwatch.com, Oct. 29, 1/4p.Africa, Mozambique, South America, ColombiaNews item - Fura
DM202104-0640
2021
Creamers Mining WeeklyGemfields warns of full-year loss. $ 93.2 mln. creamersminingweekly, March 26, 1/4p.Africa, Mozambique, ZambiaNews item - Gemfields
DM202104-0665
2021
MiningmxGemfields to restart ruby, emerald production. Kagem MRM ( Montepuez).miningmx.com, March 2, 1/2p.Africa, Zambia, MozambiqueNews item - Gemfields
DM202105-0856
2021
Rough-polishedGemfields suffers $ 93 mln net loss. roughpolished.com, Apr. 2, 1/4p.Africa, Zambia, MozambiqueNews item - Gemfields
DM202105-0889
2021
Rough-polishedGemfields earns $ 59 mln from ruby auction after 15 month trade hiatus. roughpolished.com, Apr. 12, 1/4p.Africa, MozambiqueNews item - Gemfields
DM202106-1018
2021
MiningmxHerd mentality just the ticket for Gemfields as it aims to shore up going concern status. miningmx.com, May 12, 1p.Africa, Zambia, MozambiqueNews item - Gemfield
DS202202-0212
2021
Roche, V., Leroy, S., Guillocheau, F., Revillon, S., Ruffet, G., Watremez, L., d'Acremont, E., Nonn, C., Vetel, W., Despinois, F.The Limpopo magma-rich transform margin, south Mozambique - pt. 2. Implications for the Gondwana breakup.Tectonics, e2021TC006914 Africa, Mozambiquegeophysics - seismics

Abstract: The rifted continental margins of Mozambique provide excellent examples of continental passive margins with a significant structural variability associated with magmatism and inheritance. Despite accumulated knowledge, the tectonic structure and nature of the crust beneath the South Mozambique Coastal Plain (SMCP) are still poorly known. This study interprets high-resolution seismic reflection data paired with data from industry-drilled wells and proposes a structural model of the Limpopo transform margin in a magma-rich context. Results indicate that the Limpopo transform margin is characterized by an ocean-continent transition that links the Beira-High and Natal valley margin segments and represents the western limit of the continental crust, separating continental volcano-sedimentary infilled grabens from the oceanic crust domain. These basins result from the emplacement of the Karoo Supergroup during a Permo-Triassic tectonic event, followed by an Early Jurassic tectonic and magmatic event. This latter led to the establishment of steady-state seafloor spreading at ca.156 Ma along the SMCP. A Late Jurassic to Early Cretaceous event corresponds to formation of the Limpopo transform fault zone. Which accommodated the SSE-ward displacement of Antarctica with respect to Africa. We define a new type of margin: the magma-rich transform margin, characterized by the presence of voluminous magmatic extrusion and intrusion coincident with the formation and evolution of the transform margin. The Limpopo transform fault zone consists of several syn-transfer and -transform faults rather than a single transform fault. The intense magmatic activity was associated primarily with mantle dynamics, which controlled the large-scale differential subsidence along the transform margin.
DS202202-0223
2021
Watremez, L., Leroy, S., d'Acremont, E., Roche, V., Evain, M., Lepretre, A., Verrier, F., Aslanian, D., Dias, N., Afilhado, A., Schnurle, P., Castilla, R., Despinois, F., Moulin, M. The Limpopo magma-rich transform margin, south Mozambique - pt. 1 Insights from deep-structure seismic imaging.Tectonics, e2021TC006915Africa, Mozambiquegeophysics -seismics

Abstract: A variety of structures results from the interplay of evolving far-field forces, plate kinematics, and magmatic activity during continental break-up. The east Limpopo transform margin, offshore northern Mozambique, formed as Africa and Antarctica separated during the mid-Jurassic period break-up of the Gondwana supercontinent. The nature of the crust onshore has been discussed for decades in an effort to resolve issues with plate kinematic models. Two seismic refraction profiles with coincident multichannel seismic reflection profiles allow us to interpret the seismic velocity structures across the margin, both onshore and offshore. These seismic profiles allow us to (a) delineate the major regional crustal domains; (b) identify widespread indications of magmatic activity; and (c) map crustal structure and geometry of this magma-rich transform margin. Careful examination of the profiles allows us to make the following observations and interpretations: (a) on land, continental crust is overlain by a >10-km thick volcano-sedimentary wedge related to an early rifting stage, (b) offshore, thick oceanic crust formed due to intense magmatic activity, and between the two (c) a 50-60-km wide transform zone where the crustal structures are affected by intense magmatic activity and faulting. The prominent presence of intrusive and extrusive igneous units may be attributed to the combination of a deep-seated melting anomaly and a trans-tensional fault zone running through thinned lithosphere that allowed melt to reach the surface. A comparison of the crustal thinning along other transform margins shows a probable dependence with the thermal and/or tectonic history of the lithosphere.
DM202204-0638
2022
Rough-polishedGemfields projects net profit of $ 65 mln. Montepuez ruby and Kagem emeraldRough-polished.com, Mar. 24, 1/4p.Africa, Mozambique, ZambiaNews item - Gemfields
DS202205-0708
2022
Moore, A.E., Cotterill, F.P.D., Main, M., Williams, H.B.The Zambesi: origins and legacies of Earth's oldest river system.Chapter , on requestAfrica, Angola, Zambia, Botswana, Zimbabwe, MozambiqueHistory

Abstract: The Zambezi rises with considerable modesty in north-west Zambia from a small spring on the gentle upland of the Southern Equatorial Divide - the watershed that separates the river from north-west-flowing tributaries of the Congo. The evolution of the Zambezi River has repeatedly modified the distribution of riverine plant and animal species. The hydrology of the Zambezi is further influenced by water exploitation by different users, along its main channel and tributaries. The dams have had severe ecological impacts on the major floodplains, as a result of the reduction of the supply of water and sediment. The major Early Cretaceous Zambezi-Limpopo River system entered the Mozambique coastal plain via a line of crustal weakness that was exploited by a major west-north-west trending dyke swarm. Drainage evolution of the Palaeo-Chambeshi system has been invoked as the primary cause of the recent evolution of the molerats.
 
 

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