 | | 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 |  | 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) | | concentrations and distribution patterns of columbite-tantalite minerals from Ta-ore provinces worldwide are presented...K EY WORDS : LCT family pegmatites, columbite-tantalite, REE geochemistry, LA-ICP-MS data. Introduction...consideration (e.g. Rongi (Rwanda); Uis (Namibia); Rubikon (Namibia); Hagendorf (Germany)). References are...include: (1) the Homestead pegmatite, Tantalite Valley, Namaqualand, Namibia, Neoproterozoic (Kibaran) in age;...e.g. Černý, 1989, Fig. 1) using a columbite-tantalite quadrilateral. Three fields TABLE 1. Comparison |  | | Journal (article/letter/editorial) | | Mozambique belt in East Africa. Mozambique and Madagascar and within the Damara sequence in Namibia and morcovcr...Anihlvgonite-montehrasitc Pollucite Xcnotinic Columbite-tantalite Equatorial central and south Africa Beryl Cassiterite...Mommbique belt of East Africa, Mozambique, and Madagascar, and in the Damaran of Namibia (Figure 1). One...in Africa, is the Namaqualand-Gordonia-Kenhardt region or the Orange River pegmatite belt which is also...pegmatites vary to a great extent from one pegmatite region to another. In some areas lithium silicates are |  | | Report (issue) | | the columbite-tantalite group, cookeite, tourmaline, lepidolite, topaz, and spessartine (Pezzotta, 2001;...topaz, a/bite, and quartz; 15 cm from the Shigar Valley, Skardu district, Northern Areas, Pakistan Because...nothing more of interest seemed to come out of the region until November 2002, when people from around Mandrosonoro...Madagascar to study some pegmatites in the Betafo region. Observing the exceptional tourmaline rough arriving...2003). A second location in the Deva mine, Paroon Valley, Kunar, Nuristan, Afghanistan has now been confirmed |  | | Report (issue) | | Department of Industry and Resources 100 Plain Street EAST PERTH, WESTERN AUSTRALIA 6004 Telephone: (08) 9222...manganotantalite crystals from Moolyella, Pilbara region. Simpson Collection, Western Australian Museum............................................. 6 Tantalite minerals ................................................................................. 6 Tantalite indicators ............................................................................... 76 Namibia .............................................. |  | Diener, Johann F.A., White, Richard W., Link, Klemens, Dreyer, Tanya S., Moodley, Adam (2013) Clockwise, low- metamorphism of the Aus granulite terrain, southern Namibia, during the Mesoproterozoic Namaqua Orogeny. Precambrian Research, 224. 629-652 doi:10.1016/j.precamres.2012.11.009 | Journal (article/letter/editorial) | | metamorphism of the Aus granulite terrain, southern Namibia, during the Mesoproterozoic Namaqua Orogeny Johann...Rodinia, and has been correlated with similar rocks in east Antarctica (Jacobs et al., 1993, 2008; Thomas et...terrain, a lesser-known part of the NMC in southern Namibia that has only been previously examined as part...km (Fig. 1). The NMC is exposed on the west and east coasts of southern Africa and is covered by sedimentary...1994; Moen and Toogood, 2007). Most NMC rocks in Namibia form part of the high-grade Gordonia subprovince |  | | 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) |  | | 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 |  | | 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 | | 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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