 | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Journal (article/letter/editorial) | | from rare-metal pegmatites in South Africa and Namibia JoY R. BALDWIN Department of Geology, University...from rare-metal pegmatites in South Africa and Namibia have been investigated with the electron microprobe...microprobe. A uranmicrolite from Karibib, Namibia contained 14.35% UO2, 1.03% PbO, 56.12% Ta205, 13.18% Nb205...traverses across a 1.3 mm uranoan microlite, Tantalite Valley, Namibia, revealed two essentially distinct compositions:...manganotantalite, ferrotantalite, South Africa, Namibia, replacement. Introduction MICROLITE minerals |  | | 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unpublished.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 |  | | Journal (article/letter/editorial) | | Consulting Geologist, PO Box 11222, Windhoek, Namibia e-mail: roymm36@mweb.com.na © 2012 December Geological...and syntectonic metasediments in northwestern Namibia and in the Namaquan terranes are mid to late Mesoproterozoic...about ~1.37 Ga in northwestern Namibia, to ~1.24 Ga(?) in the region of the central Damara Orogen, <1...the crust accompanied collision in northwestern Namibia. Syntectonic granite magmatism was extensive and...extend in a northwesterly direction into southern Namibia where the former has been variously called the |  | | Report (issue) | | SURVEY NAMIBIA 1990 Open File Report MRS 12 2 Abstract Niobium-tantalum mineralisation in Namibia occurs...niobium-tantalum pentoxides of the columbite-tantalite series, or as niobium-tantalum minerals of the...pyrochlore group. Minerals of the columbite-tantalite series are associated with rare metal pegmatites...by-products of Tin-mining operations in central Namibia (Uis, Nainais, De Rust). Prominent niobium-tantalum...mineralised pegmatites occur in the Tantalite Valley in southern Namibia and have been mined for a long time |  | | Journal (article/letter/editorial) | | Ferrontantalite replacing manganotantalite, South Africa and Namibia, 571 FLEISCHER, M., see ATENCIO, D., 639 Flexibility...Gahnite-quartz-sillimanite assemblages, South Africa, 63 Galena, Silvermines, Ireland, 293 GARNER, C. D., see CHARNOCK...315; luminescence spectroscopy of, syenite complex, East Greenland... ', 642 centres in carbonates, 201;...and Orthoclase, occurrence from P-T diagrams, 25 Namibia, 571 Oxygen isotope fractionation between cassiterite...surface alteration of, minerals, South Africa and Namibia, 571 213; titanomaghemite formula, 299 Multilayer |  | | Book (edition) | | A splendid specimen of wulfenite from Tsumeb, Namibia Half-title: Quartz, Nababeep Opposite: Mimetite...Overleaf: Crystalline incrustations of vanadinite, Namibia Contents Acknowledgements 6 Author’s Preface...attached list of working mines. The geological map of Namibia which shows the mines and also farm boundaries...Orange River cast of Vioolsdrif. In Namibia amethyst can be found north-east of Otjiwarongo, and in Botswana...station in the Northern Transvaal, and ; Rossing in Namibia. Asteriated material with well-defined stars hat |  | | Journal (volume) | | Tertiary Alkaline Lavas from the Kahuzi- Biega Region, Western Rift, Kivu, Zaire: R. T. Lubala, A. B...England; B. D. Hackman, Nairobi, Kenya; P. J. Hamilton, East Kilbride, Scotland; C. J. Hawksworth, Milton Keynes...pseudotachylite and chert breccia (Paris 1985a). To the east, the Diepgezet sediments located above the T junction...cross cut by Malolotsha sediments which, to the east, have been folded along NE-SW axes. However, it...nicity ancJ continental evolution in the Barberton region, Transvaal. In Clifford, T. N. and Gass. I.G. (Eds) |  | | Report (issue) | | image. Lithium-brine evaporating ponds at Clayton Valley, Nevada. Lithium has many uses, the most prominent...massive sulfide, sedimentary exhalative, Mississippi Valley-type, and coal deposits and other types of deposits...production for the period 2006–10, by country or region and amount.......................................centimeter-size pyrochlore crystals from Uganda, and a tantalite crystal.........................................showing selenium concentrations in coal samples, by region of the United States.......................... |  | | Book | | metamict REE, Y, U-bearing phases. 3.1 Columbite-Tantalite Group The orthorhombic minerals of this group...miscibility gap from the tapiolite field. Columbite-tantalite is known in a disordered form (A,M 2h 4 0 8 (pseudo-oxiolite...heating at 1000°C. The alc ratio of columbite-tantalite was found a suitable order-disorder indicator...origin, and the structural state of columbite-tantalite from other parageneses is essentially unknown...~ ~ Fig.l. Compositiona1 ranges ofco1umbite-tantalite and tapio1ite minera1s in the co1umbite quadri1atera1 |  | | 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...domains are recognized: the Central Shield Zone in the east, and the Central Eburnean Zone and Lubango Zone |
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