 | | 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 |  | | 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...2.2.3.6 Kohero West pegmatites 2.2.3.7 Pistelwitz pegmatites 2.2.4 Sandamap - Erongo pegmatite belt 2...Damaran 4 2.2.4.5 Davib pegmatites 2.2 4.6 Davib West pegmatites 2.2.4.7 Pietershill pegmatites 2.2.4 |  | | 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 ....The EarlyGermanGeologistsand Entrepreneursin South West Africa The People- Mineralogists,Geologistsand Collectors...Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...Nauchas-Gamsberg-Hakos Area West and South of Rehoboth The Central and South-CentralDeposits Onganja Mine and Surrounding |  | | Report (issue) | | amethyst, 10.5 cm tall Goboboseb Mountains, Erongo Region, Namibia Scott Rudolph collection, Jeff Scovil photo...Quartz variety amethyst, 3.5 cm tall Kakamunurle Mine, Kar0r, Tamil Nadu, India Bill Larson collection...Bottom: Quartz variety amethyst, 6.7 cm tall Wattika Mine, Murzinka, Sverdlovskaya Oblast', Russia Peter Lyckberg...important amethyst source emerged in the Auvergne region in south-central France, approximately corresponding...lapidary amethyst during that period. The first mine was opened at Valz-sous-Chateauneuf in the middle |  | | Book | | .,,., ..,,.... w + ..... . ·. .... . - Namibia Zauberwelt edler Steine und Kristalle ooa Dieses...Erdgeschichte 8 Zur Geschichte des Bergbaus in Namibia 17 Der Brandberg und die Mineralfunde in seiner Umgebung...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 Grootbergpaß in Namibia Kamphaugit-(Y) von der Rössing-Mine 120 124 126 136 Das Gahnit-Vorkommen |  | | 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 |  | | Catalog/List | | Fine Mineral Show at The Denver Marriott West 1717 Denver West Blvd. • Golden, CO 80401 (Ukrainian Institute...it collected when the Tsumeb Mine (as well as other mines of the region) were still in production in...1958 to 1973, including: Angola, Basutoland, South-West Africa, Swaziland, South Africa, Rhodesia, and Mozambique...engineering work took him to the Tsumeb Mine in Namibia. This mine is renowned for producing what are arguably...remote and desert-like "Sperrgebiet" area of the southern coast of Namibia, with its fabulous wealth of gem |  | | Journal (article/letter/editorial) | | Huanuni in Bolivia (Müller et al., 2001), Brandberg West in Namibia (Macey & Harris, 2006), Svetloye, Khinganskoye...assemblage with accessory sericite, chlorite and topaz. The barren zones, named Avral and Levosilin, represent...evidence for the origin of the Brandberg West area Sn–W vein deposits, NW Namibia. Mineral. Deposita., 41,...(1967) The zones of mineralization in the Komsomolsk region. Nauka, Moscow, 117p (in Russian). Ryzhenko, B |  | | Journal (issue) | | Thirty-three, Number Four Articles Jeremejevite from Namibia . . . . . . . . . . . . . . . . . . . . . . . ...Johnston & E. R. Swoboda Sulfur from the Perticara mine area, Pesaro-Urbino, Italy . . . . . . . . . . . ....Pezzotta Famous mineral localities: The Lord Brassy mine, Tasmania . . . . . . . . . . . . . . . . . . .... John Sinkankas (1915–2002) at the Pala Properties Mine Bash, 1977. Van Pelt photo. NOTICE Died, John Sinkankas...County $12 Museum, Himalaya mine $12 (Brazil), Bosch Collection v.10/#2 Jeffrey mine (Quebec), Alpine Rodingites |  | | Book (volume) | | Ojuela Mine, Mapimi, Durango, 51 Aegirine Mt Malosa, Zomba Dist., Malawi, 60 Amethyst Brandberg West, Gobbobisberg...Gobbobisberg Mtns., Namibia, 31, 57 Margareta Mine, Amatitlan, Guerrero, Mexico, 20 Apatite (with Tourmaline)...Areas, Pakistan, 15 Golconda Mine, Minas Gerais, Brazil, 32 Panasqueira Mine, Beira Baixa, Portugal, 5,...Valley, Pakistan, 22 Azurite (on Malachite) Milpillas Mine, Sonora, Mexico, 64 Babingtonite Hongxi, Meigu,...Bannisterite Zinc Corp Mine, Broken Hill, NSW, Australia, 69 Benitoite Benitoite Gem Mine, New Idria Dist. |  | | Book | | papers and 19 geological maps in Western Australia, Namibia and Greenland. Throughout his career, which has...Nova Scotia, Canada . 4.3.9 The Brandberg West Greisen Vein Systems, Namibia . . 4.3.10 The Kalguta Mo-W-Be-Bi.... . . . . . . . . . . . . . . 6.5.1 Navachab, Namibia. . . . . . . . . . . . . . . . . . . . . . . ....Cu Deposits of the Matchless Amphibolite Belt, Namibia . . . . . . . . . . . . . . . . . . . . . . . 7...Pb-Zn-Cu-Ag-V Deposits of the Otavi Mountain Land, Namibia . . . . . . . . . . . . . . . . . . . . . . . |  | | 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 ferberite 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 |  | Harris, Chris, le Roux, Petrus, Cochrane, Ryan, Martin, Laure, Duncan, Andrew R., Marsh, Julian S., le Roex, Anton P., Class, Cornelia (2015) The oxygen isotope composition of Karoo and Etendeka picrites: High δ18O mantle or crustal contamination?. Contributions to Mineralogy and Petrology, 170 (1) doi:10.1007/s00410-015-1164-1 | Journal (article/letter/editorial) | | basalt dykes from the ca 135 Ma Etendeka LIP of Namibia and Karoo-age picrite dykes from Dronning Maud...study are from three locations: the Tuli Syncline region of southern Zimbabwe and NE Botswana, Mwenezi (formerly...Zimbabwe (Cox et al. 1984), and the Ahlmannryggen region of western Dronning Maud Land that forms part of...The Tuli syncline is situated west of Mwenezi (Fig. 1) and comprises an area of volcanic outcrop of 240...(1991); a much larger number of dykes from this area were subsequently described by Riley et al. (2005) |  | Legros, Hélène, Richard, Antonin, Tarantola, Alexandre, Kouzmanov, Kalin, Mercadier, Julien, Vennemann, Torsten, Marignac, Christian, Cuney, Michel, Wang, Ru-Cheng, Charles, Nicolas, Bailly, Laurent, Lespinasse, Marc-Yves (2019) Multiple fluids involved in granite-related W-Sn deposits from the world-class Jiangxi province (China) Chemical Geology, 508. 92-115 doi:10.1016/j.chemgeo.2018.11.021 | Journal (article/letter/editorial) | | (wolframite and cassiterite) and post-ore (quartz, NU topaz and fluorite) minerals were studied. In both deposits...of fluid inclusions in wolframite, cassiterite, topaz and fluorite is between 2.4 and 11.2 wt. % equiv...W). Values of δ18O in wolframite, cassiterite, topaz and fluorite crystals range from -3.0 to 3.3 2...(wolframite, cassiterite) and gangue minerals (quartz, topaz, and fluorite) were studied in order to investigate...and references therein) and covered a 14,300 km2 area (Sun et al., 2012). CE Finally, the Yanshanian |  | | Journal (article/letter/editorial) | | tectonic alkaline magmatism in Saudi Arabia and West Africa. For the remainder ol the Phanerozoic, folding...carhonatites with oversaturated magmatism such as in Namibia. Angola, and the East African rift system. Despite...Phanerozoic Cameron Niger Nigeria Sudan Saudi Arabia Namibia 1. Introduction Most of the African continent...Phanerozoic in Saudi Arabia (Drysdall et ul. 1986) and West Africa (Liegeois et al, this volume). Recent detailed...1986). Thus the most important feature of this region is the sequential development of granitic rock |  | | Journal (issue) | | Secretary: Colin Brough 1 William Allen Lane LINDFIELD West Sussex RH16 2SA Peter Moore Royal Russell School...some localities in the copper, lead, barite mining area in the hills to the south-east of Pontesbury. The...Westcott copper mine, comprised three separate collecting sites in two short adits and the mine dump. Nearby...Nearby was the Badger Level section of the Huglith mine complex, which was our other location. We were too...a layby in the forestry surrounding the Huglith mine. When we did so later in the day there were some |  | Cui, Xiaolin, Wang, Qingfei, Deng, Jun, Wu, Huaying, Shu, Qihai (2019) Genesis of the Xiaolonghe quartz vein type Sn deposit, SW China: Insights from cathodoluminescence textures and trace elements of quartz, fluid inclusions, and oxygen isotopes. Ore Geology Reviews, 111. 102929 doi:10.1016/j.oregeorev.2019.05.015 | Journal (article/letter/editorial) | | supercritical fluid at ~570°C. Quartz (Q2) in the syn-ore topaz–cassiterite–quartz veins has lower CL intensity...content (1.3–12 ppm). Fluid inclusions hosted in Q2, topaz and cassiterite are liquid-rich fluid inclusions...(Q3) closely associated with sericitization of topaz generally 1 crosscuts Q2, and has dark CL intensity...of cassiterite, which include muscovite, quartz, topaz and fluorite. Such mineral superimposition resulted...the east and by the West Burma Block along the Myitkyina 4 suture to the west (Fig. 1a; Metcalfe, |  | | Report (issue) | | category ........ Estimated cumulative and annual mine production of tungsten contained in ore and concentrate—...also recovered from placer deposits. Most current mine production of tungsten is from vein/ stockwork,...accounted for over three-fourths of the world’s mine production of tungsten. China alone produced about...the governments of the United States, Canada, and West Germany. It was subsequently joined by South Africa...production of ferrotungsten ceased in France and West Germany, because it could be imported more cheaply |  | | Journal (article/letter/editorial) | | normal to 13 veins in many tungsten deposits in the area decrease with increasing depth, and the 14 time...2006). The 63 vein-type tungsten deposits in the region are located near the roof zone of buried alkali-...scovite in 83 sandstone and silica-muscovite-topaz-fluorite in granite (Liu and Ma, 1993; Zhu et al...X-axis is in an orientation normal to the veins. The area covered by the model is 1.2 150 x 1.2 km and is...involved in the deposition of 359 tungsten in the region (cf. Stein and Cathles, 1997). 360 Disseminated |  | Zhang, Yongwang, Liu, Yan, Zhu, Xinxiang, Raschke, Markus B., Shen, Nengping (2021) Genesis of highly fractionated granite and associated W-Sn-Be mineralization in the Xuebaoding area, Sichuan Province, China. Ore Geology Reviews, 135. 104197pp. doi:10.1016/j.oregeorev.2021.104197 | Journal (article/letter/editorial) | | associated W-Sn-Be mineralization in the Xuebaoding area, Sichuan Province, China Yongwang Zhang a, b, *...of lepidolite, spodumene, petal ite, fluorite, topaz, tourmaline, apatite, and other minerals (i.e.,...hydrothermal gold deposits in the Kalgoorlie-Norseman region, western Australia. Econ. Geol. 94, 423–438. Gill...Marignac, C., Weisbrod, A., 1992. The Beauvoir topaz-lepidolite albite granite (Massif Central, France);...evidence for the origin of the Brandberg West area Sn-W vein deposits, NW Namibia. Miner. Deposita 41, 671–690 |  | | Book | | magmatism of the eastern margin of the Atlantic (Namibia, Angola) or the western African kimberlites do...both parts, one and two. The second part discusses West-African magmatism associated with the early opening...of the processes operating in the mantle beneath West Africa is also illustrated in this second part and...Northeastern Africa .............................. 4.3 West Central Africa .............................. 5...Physical, Petrographic and Chemical Features of South West Ugandan Quaternary Volcanism ... 9.1 Physical.. |  | | Journal (article/letter/editorial) | | previous ideas on what is without doubt a kind of “mine field”, because if a classification is based on...(concentration of deposits of similar nature over an area of about 100 km2) NU Some other important definitions...anomalous concentration of metals Operating/abandoned mine: workings that are operating or on care and maintenance...systems, accretionary sedimentary prisms in the trench area are well developed, whereas they may be absent in...mineral system remains, if I may use the expression, a mine field, as testified by the abundance of books and |  | | Catalog/List | | Fine Mineral Show at The Denver Marriott West 1717 Denver West Blvd. • Golden, CO 80401 Saturday, September...Ordovician, Asery Level Formation Wolchow River Region, St. Petersburg, Russia As if it were not enough...with a resin to enhance stability, and a hollow area where the whorl would be has been filled in a similar...costatum species and was mined at the Korite Oxbow Mine which has been closed since the early 2000s. The...compression to the shell. There is a raised and irregular area protruding out from the whorl on both surfaces, |  | | Report (volume) | | pentaborate sheet structure from the Tuzla salt mine, Bosnia and Hercegovina. Am Mineral 79:562-569 Beukes...new hydrous calcium borate, from the Death Valley region, California. Am Mineral 44:911-919 Erd RC, McAllister...new hydrous calcium borate from the Death Valley region, California. Am Mineral 46:560-571 Erd RC, Morgan...(1989) Mineralogy and paragenesis of the Little Three mine pegmatites, Ramona District, San Diego County, California...member of the mica group, from the Little Three mine pegmatite, Ramona District, San Diego County, California | | | Report (volume) | | NEODYINIIUIML . «.52,.nc0ccnenigacdaeanicaseeeMennt ae area erat a easins 620 README ALY 2655s Sen insects eb...pentaborate sheet structure from the Tuzla salt mine, Bosnia and Hercegovina. Am Mineral 79:562-569 Beukes...hydrous calcium borate, from the Death Valley —~ region, California. Am Mineral 44:911-919 Erd RC, McAllister...new hydrous calcium borate from the Death Valley region, California. Am Mineral 46:560-571 Erd RC, Morgan...Mineralogy and paragenesis of the Little Three mine pegmatites, Ramona District, San Diego County, California |
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