 | | 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...Cross - Uis pegmatite belt 2.2.2.1 Strathmore pegmatites 2.2.2.2 Karlowa pegmatites 2.2.2.3 Uis pegmatite...2.2.3.7 Pistelwitz pegmatites 2.2.4 Sandamap - Erongo pegmatite belt 2.2.4.1 Gossow pegmatites 2.2.4 |  | | Journal (article/letter/editorial) | | and Madagascar and within the Damara sequence in Namibia and morcovcr. within the Narnnqualand metamorphic...Mozambique, and Madagascar, and in the Damaran of Namibia (Figure 1). One of the largest, continuous regions...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...Zimbabwe. 6. Bikita. Zimbabwe; 7. Karibib area. Namibia; 8. Noumas. Namaqualand. South Alrica: 9. Muianc |  | | Journal (article/letter/editorial) | | oxides from pegmatites of the Cape Cross–Uis pegmatite belt, Namibia WARRICK C. FUCHSLOCH*, PAUL A.M. NEX...Abstract The Cape Cross-Uis pegmatite belt, Damara Orogen, north-central Namibia hosts multiple Ta-Nb-...tapiolite, cassiterite and minor ixiolite and wodginite occur in abundance within pegmatites and display...cassiterite, granitic pegmatite, Damara Orogen, Namibia. Introduction The internal evolution processes...et al., 2017). In the Cape Cross-Uis pegmatite belt (CUPB) of Namibia, numerous granitic pegmatite bodies |  | | Journal (article/letter/editorial) | | production; other Ta-Nb oxides such as tapiolite, wodginite, ixiolite, rutile and pyrochlore-supergroup minerals...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...mineral supply chain due-diligence initiatives in the region and at the Ta (and Sn) smelter level, combined...of their production period (Fetherston, 2004). Namibia Some of the pegmatites in the Tantalite Valley |  | | Field Trip Notes | | the Geological Society & Geological Survey of Namibia II I -· --· ...... ----·----, Editor: M. Niall...the Geological Society & Geological Survey of Namibia -- - -- .. --- ----• • ·- •• -1 · ~. ,. :...DAMARA OROGEN G.LC. Schneider Geological Survey or Namibia, P O Box 2168, Windhoek 1.0 Day 1 - Monday, 22...Company - Uis 5.4 12:30 - 14:00 Lunch at Uis 5.5 14:00 - 17:00 Uis Tin Mine 5.6 Overnight: Uis 32 32 33...Day 6- Saturday, 27 August 1994 6.1 08:00 - 10:00 Uis - Spitzkoppe 6.2 10:00 - 11:30 African Granite Quarry |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb 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...chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in African Ta provinces MA 5.1...Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4.5. Older Granites (Nigeria) 5.4.6. Madagascar...variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7.3. Chemical variability of Ta-Nb oxides |  | | Book | | AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree . Khomas Highland...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...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 |  | 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) | | were used for external calibration. For CGM, wodginite and tapiolite, 55Mn was used as internal standard;...consideration (e.g. Rongi (Rwanda); Uis (Namibia); Rubikon (Namibia); Hagendorf (Germany)). References...Homestead pegmatite, Tantalite Valley, Namaqualand, Namibia, Neoproterozoic (Kibaran) in age; (2) the Shori...C1 (Tecklenberg) pegmatite, SW of Uis, Cape Cross-Uis belt, Namibia a/b/c columbite-(Fe), tantalite-(Fe)...columbite-(Fe) Kibeke, Pangi, Kivu, DRC Manono, Mwanza region, Katanga, DRC Ruhanga pegmatite, Gatumba district |  | | Report (issue) | | manganotantalite crystals from Moolyella, Pilbara region. Simpson Collection, Western Australian Museum............................................. 76 Namibia ........................................................................................... 8 Wodginite collected from its type locality at Wodgina ....State and in 1904–05 around Wodgina in the Pilbara region. Over the first 40 years tantalite was mined as...around Dalgaranga, Arthur River, and in the Pilbara region, particularly in the Wodgina area, already have |  | | 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 |  | Melcher, F., Graupner, T., Sitnikova, M., Henjes-Kunst, F., Oberthür, T., Gäbler, H.-E, Bahr, A., Gerdes, A., Brätz, H., Rantitsch, G. (2009) Ein Herkunftsnachweis für Niob-Tantalerze am Beispiel afrikanischer Selten-Element Pegmatite. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 155. | Journal (article/letter/editorial) | | artisanalem Bergbau in Ruanda, Mosambik, Äthiopien und Namibia detailliert untersucht. Die kontrollierte Probennahme...Ägypten, Äthiopien, Somalia, Madagaskar, Mosambik, Namibia, Nigeria, Simbabwe, Südafrika und in Westafrika...(panafrikanisch, z.B. Mosambik, Äthiopien, Damara Orogen in Namibia) und (5) mesozoisch (jurassische Ringkomplexe des...LCT-Pegmatite Selten-MetallGranite Uis, Rubikon, Helikon 21°15´S 14°50´E Namibia Damara7 kibarisch, spätorogen...Homestead, White City, Lepidolite 28°46´S 18°30´E Namibia Tantalite Valley6 Abu Dabbab, Nuweibi 25°19´N |  | | Catalog/List | | sections in fine grained yellow mica. (Uis Damaraland Namibia) 1x1 £4 ( 3 or 4 crystals) 321 PYRARGYRITE...Mlhfe Moctezuma Mexico) 1cm piece £ 5 5mm £3 485 WODGINITE Mn Sn Ta 0 pure dark brown metallic (Herbb £2...crystals,scattered in white Calcite (Spitzkoppe, Namibia) H x » £1.50 1x1 £3.50 1x2 £7 2x2 £15 188 HALITE...with red areas of Villiaumite. (Avis, Windhoek Namibia) lx2ins £5 312 OKENITE Ca/10 Si/18 0/46 White acicular...mixed with pink Petalite. (Rubicon Mine, Karibh, Namibia) 1x1 £fr 1x2 £5 230 MAHGANDIASPORE Al Hi! 0 OH |  | Gonçalves, , Melgarejo, , Alfonso, , Amores, , Paniagua, , Neto, , Morais, , Camprubí, (2019) The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola. Minerals, 9 (10) 580 doi:10.3390/min9100580 | Journal (article/letter/editorial) | | containing phosphates, such as Tsaobismund in Namibia [35], Albera in the French Pyrenees [36], and in...have been reported in pegmatites from the Písek region, Czech Republic [49]. Minerals 2019, 9, 580 ...metasomatised host rocks of the Cape Cross–Uis pegmatite belt, Namibia [92]. In addition, the composition of...Li-Fe-Mn phosphate minerals in granitic pegmatites of Namibia. Commun. Geol. Surv. Namib. 1991, 7, 21–34. Roda...mineral associations of the Tsaobismund pegmatite, Namibia. Contrib. Mineral. Petrol. 1986, 92, 502–517. [CrossRef] |  | | Book (edition) | | filled with secondary alteration phases. Left: Wodginite crystal (yellowish grey) with irregular fracturing...penetrabrown tion twins bright orange to yellow yes Wodginite strong, light grey to bluish grey weak distinct...Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey (sample: Halbach); XPL If marked in description... Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia (sample: Melcher/Oberthür); PPL D Fine-grained... Karabash, Chelyabinsk Oblast’, Southern Urals Region, Russia Au-Cu alloys, native Copper, native Gold |  | | Report (issue) | | Most production appears to be centered in the region of the major alkaline intrusive complexes of Lovozero...Peninsula and Vishnevogorsk in the middle Ural region. • Both niobium and tantalum are held on the U...supply of nonpyrochlore concentrates from Spain, Namibia, Canada (from mine production or off stockpiles)...production. The output of concentrates from Spain and Namibia is negligible, but the other four countries, along....... Canada ............ Malaysia ........... Namibia ............ Nigeria ............. Rwanda .... |  | | Book | | localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...in Switzerland, it is only in the Maderanertal region of east-central Canton Uri that clefts bearing...clefts are found fairly commonly throughout this region, such that only a handful of notable finds during...medium-submetallic luster (Jahn et al., 2003). NAMIBIA [SOUTH-WEST AFRICA] Erongo Mountains, Damaraland. The igneous...igneous rocks of the 30 km-wide Erongo Mountains upland, 20 km north of Usakos, are shot through with complex |  | | Journal (volume) | | Tertiary Alkaline Lavas from the Kahuzi- Biega Region, Western Rift, Kivu, Zaire: R. T. Lubala, A. B...nicity ancJ continental evolution in the Barberton region, Transvaal. In Clifford, T. N. and Gass. I.G. (Eds)...place. 2. Geological succession in the Migori region The Migori greenstone belt comprises a metamorphosed...grains. 4. Metamorphism and structure of the Migori region The Nyanzian rocks of the Migori greenstone belt...ages of faulting were identified in the Migori region: 1. The oldest faults are those whose fault planes |  | | Book (edition) | | abbreviated, e.g. canton (Switzerland), vilayet (Turkey), region (Chile), kray and oblast (Russia). The country...by Mobutu, and is now the Katanga administrative region again. The former Kivu province is now divided...United States or of the Upper Silesian historical region in Poland, where the importance of ore-bearing...Kunlun Mts., near Hotan, Xinjiang Uygur Autom. region, China, also at Fengtien, Taiwan. Green at Ospinskoye...Dara-i-Pioz In green needles to 7 mm at Tsumeb, Namibia. massif, Alai Mts.,Tajikistan. AM 62, 173, 1977 |  | | Report (issue) | | the Sludyanka complex in the southern Lake Baikal region of Russia. Six New Species Today, this team has...from the Mikhaylovskoye Mine in the Transbaikal Region of Russia is 4.5 cm tall, and is in the Dave Bunk...Nigeria; Namibia; Nuristan Valley, Afghanistan and the Malkhan district in Russia's Transbaikal region have...Selway et al. (1998a) African Beauty The Erongo Mountains of Namibia produced this 5 cm tall foitite crystal...the Sahatany Valley in Madagascar; Transbaikal region of Russia; Minas Gerais, Brazil; Blizna, Czech |  | | Journal (issue) | | ............. 250 by /. D. Hallahan Obituary, L uis T. L e it e .......................................Mozambique, South Africa, and South-West Africa (Namibia), where he discovered a new mineral species at...22/#6 Wagholi cavansite (India), Kombat mine (Namibia), Madan mines (Bulg.),Beltana mine $10 v.23/#l...22/#6 Wagholi cavansite (India), Kombat mine (Namibia), Madan mines (Bulgaria), Beltana mine$10 Postage...- 253 BACK ISSUES! v.27/#2 Onganja mines (Namibia), Lac Nicolet mine (Que.), Afghanite $10 v.27/#3 |  | | Book (edition) | | Sr)Ab[(As, P)O.i ]2(OH)s • H 2 O, trig., blue t o bl uis h- green, Crandallil,e group, 67, 854 ( 1 982) D...1 l 4 2 N a( S r, D a)P O�, hex . , blu e to bl uis h- g reen, 66, 438 ( 1981 ) = Hematite Oligoclase...i6Al 2(OH) 1 6 (CO3 , Oll) • 4 H2O , tri g ., bl uis h- green, Hydrota/cite group, 57, 1 559 ( 1 972)...Pbp 8 i!2 (S, Se)21 , mon., 62, 397 ( 1977 ) Wodginite, (Ta, Nb, Sn, Mn, Fe) 1 6 032 , mon., 48, 1 4...)(Fe+ 2 , Fe+ 3 , Mg}\l(PO 4 )a, m on . , deep bl uis h- green to oi l y green , fo rms tw o series, w |  | | Report (issue) | | production for the period 2006–10, by country or region and amount.......................................showing selenium concentrations in coal samples, by region of the United States.............................tellurium refinery production in 2013, by country or region..................................................485 p. Sears, Louis, 2011, Jargon alert—Utility: Region Focus (Federal Reserve Bank of Richmond), v. 15...Priorities List; n.a., not applicable] Site name EPA region State EPA site ID number Year mining started |  | | Book (edition) | | Sci.1923, 248 (str) 4 Bragg: Proc. Ro~: Soc.1914.-UiS (str); PDF 5-628 5 Welton & McCarthy.1989: PDF 41-1476...Wolframite group 4.DB.35. Columbite group 4.08.40. Wodginite group 4.DB.45. Tivanite-carrnichaelite group 4...Kexue Tongbao 33 (1988), 856 (str) 2 4.DB.40. Wodginite Group. ABC 2 O 8. Edge- and corner-sharing octahedra...5.l0A ~ = 90.9° z =4 Class 4. Oxides 212 Wodginite (Nickel et al.. 19631) MnSnTa2O 8 Titanowodginite...are occupied by NaO 6 octahedra; the interlayer region between the sheets is occupied by REE and Na polyhedra |  | | Book (edition) | | the city limits, but also to the sur¬ rounding region. Terms for materials in GeoRef, for example, "iron...Aberfeldy Term introduced in 1989. Town and mining region in Tayside, central Scotland; oil field in Lloydminster...in GeoRef (see Introduction, p. vi). Autonomous region on the Adriatic Sea. CO N414000N425500 E0144800E0130000...SA Aleutian Islands Adalia use Antalya Adamawa Region in W Africa, now part of N central Cameroon and...BA Proterozoic BT Precambrian Adrar Interior region in W Mauritania near Western Sahara border. BT |  | | Book | | or Ireland (e.g. rossmanite, smrkovecite and wodginite). There would have been even more new information...reflection ofnot only the varied geology of the region but also a once-thriving minerals industry and...quarry, Cranm re: Kikhoan, Ardnamurchan, Highland Region; and Susanna mine. Leadhills. Strathclyde. As the...J<,lc-.of Scilly, a distance of over 150 km. The region is famous for it-; tin depo:.its, the mining of...there at one time or another. The importance of the region cannot be underestimated: one of the more common |
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