 | | Journal (article/letter/editorial) | | Ottens specimen and photo. The Yaogangxian Tungsten Mine Downloaded by [Florida International University]...20:11 23 August 2013 Yizhang County, Chenzhou, Hunan Province, China BERTHOLD OTTENS Klingenbrunn-Bahnhof...tungsten still plays an important role (Maby 2000). China produces approximately 70 percent of the world’s...tons of tungsten concentrates were produced in China. Because of changes in its political structure and...the Tungsten Mining Corporation, a subgroup of China Rare Metals and Rare Elements Group Corporation |  | | Report (issue) | | 44.386(1) X-ray Powder Pattern: Treasure Vault mine, Colorado, USA. 2.035 (100), 3.207 (90), 2.923 (90)...873 (70), 2.786 (70), 2.382 (70) Chemistry: Ag Cu Pb Bi S Total (1) 9.1 0.1 29.0 45.9 16.7 (2) 9.51...16.00 100.8 100.00 100.00 (1) Treasure Vault mine, Colorado, USA; by electron microprobe. (2) Ag3...Disseminated through quartz. Association: Galena, matildite, hessite, aikinite, clausthalite, bismuthinite...; in the Lake City district, Hinsdale Co.; from Darwin, Inyo Co., California. In Scotland, from Corrie |
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