 | | 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 |  | | 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) | | 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 |  | | 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unpublished.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) | | biotite, ferrocolumbite, and phosphates (such as triphylite) as well as with the common alteration and replacement...microlite, more evolved members of the columbite-tantalite group, cookeite, tourmaline, lepidolite, topaz...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 |  | | 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 |  | | 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) |
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