Large-scale epithermal Ag vein deposit, consisting of layers, veins, and pods hosted in Late Jurassic volcanic rock, mainly Mesozoic Yanshanian adamellite and rhyolite porphyry. The deposit is strongly controlled by fractures. Two ore mineral assemblages occur, with Mn-Ag or Ag minerals in quartz-veins. Alterations are sericite, chlorite, silica, adularia and carbonate. The deposit occurs in a Variscan orogenic belt between the Siberian and North China Platforms.
References:- Dong Zhensheng et al. (1996): Geochemistry of low-temperature independent Ag deposits. In: Tu Guangzhi, Ed.: Low Temperature Geochemistry, Science Press (Beijing), 32-42.
- Chaoyang Li, Tiegeng Liu, Lin Ye, Weiguang Zhu, and Hailin Deng (2003): Large and superlarge silver deposits associated with volcanic rocks in China. Science in China, Series D (Earth Sciences), 46, Supplement 1, 84-98.
- Xiang Chen, and Ge Zhang (2004): Isotope Geochemistry of Erentaolegai Silver Deposit, Inner Mongolia, China. Chinese Journal of Geochemistry 23(1), 71-80.
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http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt
31 entries listed. 24 valid minerals.
