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《Geology in China》 2006-01
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Metallogenic conditions and model of the superlarge Shuiyindong stratabound gold deposit in Zhenfeng County, Guizhou Province

LIU Jian-zhong1,2, DENG Yi-ming1, LIU Chuan-qin1,2, ZHANG Xing-chun3, XIA Yong3 (1. Ziji Holding Company Ltd., Zhenfeng 562200, Guizhou, China; 2. Geological Party 105, Guizhou Bureau of Geology and Mineral Exploration and Development, Guiyang 550018, Guizhou, China; 3. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, Guizhou, China)  
The Shuiyindong gold deposit was found in the middle 1990s and has now become a superlarge stratabound gold deposit through nearly ten years of exploration. The orebodies occur in the stratified or stratoid shape in high-porosity bioclastic limestone of the Upper Permian Longtan Formation within 300 m near the axis of the Huijiabao Anticline. The shape of the orebodies is similar with that of the anticline. They are strictly controlled by carbonate rocks, and both their hanging wall and footwall consist of claystone or silty claystone, with clear-cut boundaries. The gold mineralization is represented by the association of silicification, dolomitization and pyritization. Silicification and dolomitization are metallogenic preconditions. The possibility of carbonate mineralization and gold grade of ores depend on the hydrothermal alteration of pyrite and its alteration intensity. The deposit is characterized by the large number of orebodies, small thickness and high grade, and a single orebody may reach a medium-sized deposit scale. This deposit has the features of medium- and low-temperature, ultrahigh-pressure hydrothermal mineralization. Gold is hosted by arsenic-bearing pyrite zones growing along the cores of idiomorphic pyrite.
【Fund】: 贵州省自然科学基金(20033056);; “贵州省贞丰水银洞金矿成矿特征及金的超常富集作用”项目资助。
【CateGory Index】: P618.51
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