 | | Report (issue) | | SURVEY NAMIBIA 1990 Open File Report MRS 12 2 Abstract Niobium-tantalum mineralisation in Namibia occurs...by-products of Tin-mining operations in central Namibia (Uis, Nainais, De Rust). Prominent niobium-tantalum...pegmatites occur in the Tantalite Valley in southern Namibia and have been mined for a long time on a small...2.2.3.7 Pistelwitz pegmatites 2.2.4 Sandamap - Erongo pegmatite belt 2.2.4.1 Gossow pegmatites 2.2.4...4.8 Davib South 2.2.4.9 Brabant (van der Made, Erongo Schlucht) pegmatite 2.2.4.10 Okawayo pegmatites |  | | Book | | Twyfelfontein 7 AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree ...station Garub near Aus Nature conservation, Erongo 16 Welwitschia, Goboboseb Mountains 17 ....Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...s Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits |  | | Report (issue) | | MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY NAMIBIA I 1990 Open File Report MRS 05 2 Abstract A...wide variety of semi-precious stones occur in Namibia, namely amazonite, the beryl varieties, chrysocolla...Eye", sodalite, soapstone, topaz, tourmaline and turquoise. Tourmaline, rose quartz and smoky quartz are...the most important semi-precious stones found in Namibia. The major deposits of these semi-precious stones...semi-precious stones in 1989 was 967.6 kg of tourmaline, 164 t of amethyst, 7 t of smoky quartz, 315 |  | | Field Trip Notes | | the Geological Society & Geological Survey of Namibia II I -¡ --¡ ...... ----¡----, Editor: M. Niall...the Geological Society & Geological Survey of Namibia -- - -- .. --- ----⢠⢠¡- â˘â˘ -1 ¡ ~. ,. :...DAMARA OROGEN G.LC. Schneider Geological Survey or Namibia, P O Box 2168, Windhoek 1.0 Day 1 - Monday, 22...Windhoek - Otjihase Mine 1.2 08:00 - 12:00 Otjihase Mine 1.3 12:00 - 12:30 Otjihase Mine - Windhoek 1.4 12:30-...16:00 Windhoek-Karibib 1.6 16:00 - 17:00 Capra Hill Marble Quarry 1.8 Overnight: Karibib 3 4 7 7 7 8 9 |  | | Journal (article/letter/editorial) | | location of Karibib in Namibia; prepared by William Besse. Figure 2. The Rubicon pegmatite mine, the largest...largest source of lithium in Namibia (see fig. 5 for location). This is a lithium-cesium-tantalum (LCT)...Cairncross photo (September 2014). Karibibite Karibib District, Namibia 174ââ ROCKS & MINERALS Figure 3. Karibibite...Karibibite on quartz from the Oumlil mine, Bou Azzer district in Morocco; field of view is 2.5 mm. Stephan...was described from a pegmatite in the Karibib district of Namibia by von Knorring, Sahama, and Rehtijärvi |  | | Book | | REPUBLIC OF NAMIBIA - MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY THE MINERAL RESOURCES OF NAMIBIA FIRST...ENERGY Of the several hundred minerals present in Namibia, around sixty have been exploited. some, such as...base metals and industrial minerals have helped Namibia rank amongst the top five mining countries in Africa...terms of production and reserves. In this context, Namibia is a major producer of copper, lead, zinc, cadmium...unpublished. It is evident that mineral exploration in Namibia, as elsewhere. has changed from serendipitous discoveries |  | | Report (issue) | | Wet Shaft, Tsumeb mine (photograph by Dr Gabi Schneider, Geological Survey of Namibia) MINISTRY OF MINES...GEOLOGICAL SURVEY OF NAMIBIA Director: B.G. Ho al BULLETIN 1 Type mineralogy of Namibia by Vaughan C. Daltry...the Geological Survey P.O. Box 2168, Windhoek, Namibia Price Local (+GST) Abroad (Post Free) R20.00 R25... ______ ........ Abstract The type mineralogy of Namibia is reviewed. One hundred and thirty-nine (139)...Twenty-three (23) unnamed phases are also listed. Namibia ranks second to Zaire as the most productive African |  | | Journal (article/letter/editorial) | | identity as apatite (assumedly, as opposed to tourmaline or beryl). Some of the apatite was again found...Apatite, from left 2.35 carats and 2.06 carats, Namibia. GIA GĂźbelin collection; 3609 (L), 3610 (R) (no...granitic pegmatites in the Ambilobe region (Rakovan and Waychunas 2013). Namibia Intense, slightly orange-yellow...carats are known from the Rubikon mine in the Karibib district of the Erongo region. The GIA collection has...and 2.35-carat, oval cut gems simply labeled âNamibia.â Tanzania A 1.41-carat colorless and a 3.01-carat |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂźr, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumâ(niobiumâtin) mineralisation in African pegmatites and rare metal granites: Constraints from TaâNb oxide mineralogy, geochemistry and UâPb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC 4.3.3.1. Radiometric data 4...Radiometric data 4.4.3.2. Mineralogy 4.4.4. Damara Belt (Namibia) 4.4.4.1. Radiometric data 2 ACCEPTED MANUSCRIPT...Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4.5. Older Granites (Nigeria) 5.4.6. Madagascar...and the Tantalite Valley pegmatites (southern Namibia). Large compositional variations through Fe-Mn...Nigeria and some pegmatites in the Damara Belt of Namibia. CGM, AC tapiolite, wodginite and ixiolite accommodate |  | | Journal (issue) | | Colorado and Russia. Having trave led oft en in Namibia, I was thrilled to see the recently identified...Mineralien Welt 14(6). p.15) and metanovacekite from the Erongo Complex. (Continues on page 2) Occurrence of Irhtemite...Occurrence of irhtemite and adelite at the Mercur Mine, Tooele Co., Utah; the western hemisph ere's first...specimens. not just the spectacular show pieces. The "Erongo Complexâ˘Âˇ is huge and you do no t j ust back up...is a trade-off: do you grab yet another black tourmaline or do you pick up that odd piece with green crnd |  | | Journal (article/letter/editorial) | | (mainly Rwanda and the DR Congo), around the Kenticha mine (Ethiopia) and in the Alto Ligonha Province (Mozambique)...and the Tantalite Valley pegmatites (southern Namibia) and  Large compositional variations through Fe-Mn...Nigeria and many pegmatites in the Damara Belt of Namibia. Trace element concentrations in CGM and other...Nigeria Rwanda Africa total World mine production % Africa/world Ta mine production 2008 2009 2010 2011...182 83 256 761 976 78 24 132 109 40 70 202 577 799 72 56 161 116 38 78 262 711 874 81 91 176 118 184 |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...members of the columbite-tantalite group, cookeite, tourmaline, lepidolite, topaz, and spessartine (Pezzotta...surprise. In 1997, Gary and Mary Freeman began to mine the Orchard pit, a then insignificant pegmatite...time, local people spoke of beautiful gemstone tourmaline that came from pegmatites south of Mandosonoro...nothing more of interest seemed to come out of the region until November 2002, when people from around Mandrosonoro |  | | Book | | WINDHOEK ----------- MP mineral perspectives NAMIBIA This current report has been prepared by the Bureau...provide the latest available data and information on Namibia. Comments, revisions, and additional information... Thispublication hasbeencataloged asfollows: Namibia (Mineral pcrspecri vcs) Bibliography: p. 47-55...of Docs. no.: I 28.37/2: 1. Mineral indusrrics-Namibia. I. Coakley, George J. iI ! I l I I TN19...â˘â˘â˘â˘..â˘â˘â˘â˘â˘â˘.â˘.â˘â˘â˘â˘.â˘â˘â˘ Rights of landowners and mine ownersâ˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘â˘ Special |  | | Journal (article/letter/editorial) | | out is called saprolite. Examples from the Weiss Mine, Germany, show this transition. There are types...very low. Neither the vein-type emerald quartz-tourmaline pegmatites in the chlorite-talc schists and muscovite-biotite...landscape shows the well-known Rubikon (Rubicon) Nb/Ta pegmatite in Namibia (Fig. 6f) (Moore, 2000). Episodically...N-S in the area. One of them is made up of the Rubikon pegmatite which extends in NW-SE direction and...Himalaya, exposing the core zone of the Naje tourmaline gem pegmatite which can hardly be identified |  | Graupner, T., Melcher, F., Gäbler, H.-E., Sitnikova, M., Brätz, H., Bahr, A. (2010) Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data. Mineralogical Magazine, 74 (4) 691-713 doi:10.1180/minmag.2010.074.4.691 | Journal (article/letter/editorial) | | consideration (e.g. Rongi (Rwanda); Uis (Namibia); Rubikon (Namibia); Hagendorf (Germany)). References are...Homestead pegmatite, Tantalite Valley, Namaqualand, Namibia, Neoproterozoic (Kibaran) in age; (2) the Shori...Western Australia, Australia Volta Grande (Mibra mine), Nazareno, Minas Gerais, Brazil Sao Joao del Rei...tantalite-(Mn) G 14, Nkumua mine, Kanzambi, Shabunda, Kivu, DRC Bionga mine, Shabunda, Kivu, DRC Tanco...(Tecklenberg) pegmatite, SW of Uis, Cape Cross-Uis belt, Namibia a/b/c columbite-(Fe), tantalite-(Fe), tantalite-(Mn) |  | Novak, M., Cerny, P., Cempirek, J., Srein, V., Filip, J. (2004) FERROTAPIOLITE AS A PSEUDOMORPH OF STIBIOTANTALITE FROM THE LASTOVICKY LEPIDOLITE PEGMATITE, CZECH REPUBLIC; AN EXAMPLE OF HYDROTHERMAL ALTERATION AT CONSTANT Ta/(Ta + Nb) The Canadian Mineralogist, 42 (4) 1117-1128 doi:10.2113/gscanmin.42.4.1117 | Journal (article/letter/editorial) | | been recorded at some localities, especially in tourmaline (Foord 1976, Zagorskyi & Peretyazhko 1992, Dutrow...manganotantalite replaced by ferrotantalite from the Rubikon pegmatite, Namibia (Baldwin 1989), in holtite replaced by...from rare-metal pegmatites in South Africa and Namibia. Mineral. Mag. 53, 571-581. BERLEPSCH, P., ARMBRUSTER...D.J. (2000): Complexly zoned fibrous tourmaline, Cruzeiro mine, Minas Gerais, Brazil: a record of evolving...HAWTHORNE, F.C. (1999): Compositional evolution of tourmaline in lepidolite-subtype pegmatites. Eur. J. Mineral |  | | Book | | systematically present the geology of each country, region and continent on Earth. Each book aims to provide...(Gariep Belt) cropping out in the western borders of Namibia and South Africa. They were split up in the Mesozoic...concerning the tectonic and geodynamic evolution of this region during the Precambrian. Major tectonometamorphic...tectonostratigraphic domains and structures of the region are presented, together with implications for the... They emphasize the enormous potential of this region in terms of base (Cu, Pb, Zn, Co, Ni), precious |
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