Stratiform Carlin-type deposit (bedding-parallel vein type), probably of synsedimentary exhalative (sedex) origin.
The deposit was discovered in 1875 and since then has been continuously exploited. Reserves amount to 1.76 million tons of ore, grading at 12.98 g/t Au, 6.45% Sb and 0.47% WO3. Currently, about 800 tons of ore is mined and processed per day.
There are five operating mines in the Woxi mining district, from east to west: Shangwoxi (Upper Woxi), Lijiaxi, Shilupenggong, Yuershan and Hongyanxi.
Ref.:
- Xiongwei Hu, Satoshi Murao, and Xuchang Huang (1996): Genetic model of gold-antimony-tungsten mineralization: evidence from geology and mineralization of the Wuxi deposit, Hunan, China. Bulletin of the Geological Survey of Japan 47(11), 577-597.
- Zhiping Li, and S.G. Peters (1998): Comparative Geology and Geochemistry of Sedimentary-Rock-Hosted (Carlin-Type) Gold Deposits in the People's Republic of China and in Nevada, USA. USGS Open-File Report 98-466.
- Schulz, O., Vavtar, F., and Xuexiang Gu (2002): Stratiforme Sb-W-Au-Lagerstätte Woxi in Hunan, China. Erzmetall 55(10), 547-552 (in German with English anstract).
- Bo Peng and Frei, R. (2004): Nd-Sr-Pb isotopic constraints on metal and fluid sources in W-Sb-Au mineralization at Woxi and Liaojiaping (Western Hunan, China). Mineralium Deposita 39, 313-327.
- Bo Peng, Piestrzynski, A., Liu Shengyou, and Pieczonka, J. (2007): Gold-antimony mineral phases observed in pyrite grains in the Woxi W-Sb-Au deposit, western Hunan, China. Geological Bulletin of China 26(5).
- Xuexiang Gu, Schulz, O., Vavtar, F., Jianming Liu, Minghua Zheng, and Shaohong Fu (2007): Rare earth element geochemistry of the Woxi W-Sb-Au deposit, Hunan Province, South China. Ore Geology Reviews 31(1-4), 319-336.
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Map Reference: 28°32'N , 111°54'E
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