 | | 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...the most important semi-precious stones found in Namibia. The major deposits of these semi-precious stones... topaz and turquoise. An extensive deposit of amethyst occurs in quartz-calcite veins in rocks of the...Sequence yielded major amounts of gem quality amethyst and agate. Chrysocolla and dioptase are recovered |  | | Journal (issue) | | .......................................... 38 Namibia .................................................Ashok Damarupurshad, South Africa; Mally Likukela, Namibia; Gamini Zoysa and Ismail Kamil, Colombo, Sri Lanka;...of Mines; Mally Likukela, Directorate of Mines, Namibia; Murat Akgun, Zultanite Gems LLC, USA; the MarketDirect...the production is mixed with calcite. The spinel mine at Kuh-i-Lal is being operated by a skeleton crew...only 1.5 tons a month prior to the purchase of the mine in 2001. Although material must still be mined mostly |  | | Catalog/List | | it collected when the Tsumeb Mine (as well as other mines of the region) were still in production in...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...Ianās interest stems from the family trips to Namibia, including the mines of Tsumeb. He worked with... 57001 Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on the |  | | Report (issue) | | Cover: Quartz variety amethyst, 10.5 cm tall Goboboseb Mountains, Erongo Region, Namibia Scott Rudolph collection...collection, Jeff Scovil photo Title (facing) Page Amethyst mouse with gold tail, 130 grams, 6.3 cm wide Carved...Brazilian amethyst Private collection, Robert Weldon photo Ā© 2009 GIA Page 2 Quartz variety amethyst, 3.5...5 cm tall Kakamunurle Mine, Kar0r, Tamil Nadu, India Bill Larson collection, Jeff Scovil photo Page 3...3, Table of Contents Insets Top: Circa 212 CE amethyst intaglio bearing the portrait of Roman Emperor |  | | 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 (issue) | | the a u t u m n of 1932 an astronomer friend of mine gave me a Maclean's Star Spectroscope for which...grow more rapidly. Surrounding the seed is a veil-area, which is usually discarded for optical and electronic...probably due to the specimen having been sawn from an area near the colourless seed. 263 As far as can be...h e authorized miner and mine manager of the C h a m b o n g o magnesite mine, M r . W. Andersen, was...c e of the Platveld Amethyst mine. could imagine. Some 20 years ago the Longedo ruby mine, near Arusha |  | | Journal (issue) | | For example) during the last decade the Argyle mine in Westem Australia has made significantly more...most obvious example of this is in the transition area for yellow dian~ondsfrom the "D-toZ" scale to the...description simple enough to be rneaningful to a broad constituency, and the need to describe the color consistently...illuminance (the amount of light energy incident per unit area on a surface, multiplied by the spectral sensitivity...eliminate color distractions from the surrounding area. We found that graders described the sample colored |  | | Journal (issue) | | marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...Africa (Tanzania, Kenya, Zimbabwe, Nigeria, and Namibia, as well as Madagascar), South America (Brazil...central and southern Africa (Botswana, South Africa, Namibia, Angola, and Zaire), and Russia (mainly in the...Tanzania; spessartine garnet from Nigeria and Namibia; exceptional peridot from Pakistan; and pink to...to the country rather than to the specific mine or region. For more on the specific localities, consult |  | | Journal (issue) | | stones): (1) 2 5 . 4 3 ~ 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct...Kenya; (5) 16.28-ct rubellit8 tourmaline, Queen Mine, Pala, California; (6) 15.18-ct tourmaline, Paraiba...lessee companies Tecminas and Coesminas, the Muzo mine is now fully mechanized and has introduced a sophisticated...came into full operation in Brazil. The Carnaiba mine, first found in the 1960s, continued to be active...came from Zambia (Berenblatt, 1989). The Mberengwa area of Zimbabwe continues to produce fine material, |  | | Journal (issue) | | News International ā¢ Australiaās Ellendale diamond mine opens ā¢ Aquamarine and spessartine from Tanzania...Jeremejevite from the Erongo Mountains, Namibia ā¢ New morganite mine in Madagascar ā¢ Namibian gem localities...encountered in Namibia ā¢ Plastic and steel pearl imitations ā¢ Gem cutting factories in Namibia ā¢ Conference...diamonds shown here are from Canadaās Ekati Diamond Mineā¢, which started production in 1998. The necklace...discoveries in the 1990s, starting with the Lac de Gras area in the Northwest Territories (NWT), followed by |  | | Journal (issue) | | moving products from mine to consumer. The main cover image was taken at the AnahĆ mine in Bolivia, a major...Metales del Oriente examines some of the larger amethyst specimens. The gems in the foreground are: (1)...of the company (Even-Zohar, 2007). Because of the mine closures, De Beersās market share by volume fell...11 DTCsightholder manufacturing facilities in Namibia. However, these are supplied from all DTC sources...of cutting factories throughout South Africa, Namibia, and Botswana, such as this facility in South Africa |  | | Book (edition) | | section of formations and deposits in the Sishen area................. ccc eeeeedeeeeee 151 Generalised...Dutoitspanā Mine... iawn kic. haa ented jhe. exniat ves Tis Aetialview of Koftiefonteinā Diamond Mine? .?: ssc...West Driefontein Gold Mining Company. No. 5 shaft area..... 0... 0... ec cece eee eee ena aan, Rech OMtne........0 cece eens Grassing an O\daw itwatetsrand MINE ;QUIND An... oh Ā«aus. aoe peopel ouge ote ok tos...resources of white kaolin in three deposits in Noordhoek area of the Cape Peninsula are of order of 20 million |
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Platveld Mine, Burgerhof Farm 482, Platveld area, Otavi Constituency, Otjozondjupa Region, Namibia