 | | 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...including ''Tiger's Eye", sodalite, soapstone, topaz, tourmaline and turquoise. Tourmaline, rose quartz...the most important semi-precious stones found in Namibia. The major deposits of these semi-precious stones...aquamarine, heliodor, morganite, dumortierite, milarite, topaz and turquoise. An extensive deposit of amethyst |  | | Field Trip Notes | | the Geological Society & Geological Survey of Namibia II I -Ā· --Ā· ...... ----Ā·----, Editor: M. Niall...the Geological Society & Geological Survey of Namibia -- - -- .. --- ----ā¢ ā¢ Ā·- ā¢ā¢ -1 Ā· ~. ,. :...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 |  | | 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 |  | | Book | | .,,., ..,,.... w + ..... . Ā·. .... . - Namibia Zauberwelt edler Steine und Kristalle ooa Dieses...Erdgeschichte 8 Zur Geschichte des Bergbaus in Namibia 17 Der Brandberg und die Mineralfunde in seiner...blaue Wunder vom Erongo - Auf Aquamarin-Jagd im Innern Namibias 72 Miarolen im Erongo-Granit- ein Eldorado...110 Auf Turmalinsuche in Namibia Die Demantoide von Tubussis in Zentral-Namibia 112 116 Sodalith von...Zeolithe vom GrootbergpaĆ in Namibia Kamphaugit-(Y) von der Rƶssing-Mine 120 124 126 136 Das Gahnit-Vorkommen |  | | 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 Complexā¢Ā· is huge and you do no t j ust back up...good specime ns do exist. Maybe nex t year ... Namibia had also produced some dioptase specimens from |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...columbite-tantalite group, cookeite, tourmaline, lepidolite, topaz, and spessartine (Pezzotta, 2001; Cerny, 1992).... In greisen deposits, beryl is associated with topaz, cassiterite, and ferberiteĀ hiibnerite; whereas...with quartz and feldspar. In topaz rhyolites where red beryl is found, topaz, high-temperature quartz, and...1 2 (65) 3.027 (85) 2.87 1 (50) A bove: Beryl, topaz, a/bite, and quartz; 15 cm from the Shigar Valley |  | | 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 Ā 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 |  | Melcher, Frank, Graupner, Torsten, GƤbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĆ¼r, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumā(niobiumātin) mineralisation in African pegmatites and rare metal granites: Constraints from TaāNb oxide mineralogy, geochemistry and UāPb 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 (article/letter/editorial) | | out is called saprolite. Examples from the Weiss Mine, Germany, show this transition. There are types...Nb/Ta, Sn, REE, Th, and Zr as well as garnet and topaz. Placer deposits of economic grade genetically related...them are mined especially for gemstone such as topaz, chrysoberyl, apatite and beryl (only in eluvial...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 |  | | Journal (issue) | | JJ SYD)! te up in a wooden pail. Missouri lead mine about 1890. ā_āā ; eee if atOT ace | | Horse...Rear-Dump Euclids are standard equipment on hundreds of mine, quarry, and construction jobs. For moving rock...tomorrows domand wo esi cnet scale THE Offices. MINE DEVELOPMENT & DIRECTORY at lt DORR Ass NUMBER...drills combined CP Diamond Drills in service. ā one mine alone having over a hundred Cuicaco PNeumaric TOOL...Bilbao... ITALY: Forni Stein, Genoa. MOORE WHEN MINE YOU RAPID MELT... DEVELOPMENT & DIRECTORY |
|
