河南西峡石板沟金矿成矿流体地球化学及矿床成因讨论

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石板沟金矿是近年在豫西南发现的一个剪切带容矿的脉状金矿。根据流体包裹体地球化学研究,分析了矿床成矿流体地球化学特征,讨论了金的沉淀机制和矿床成因。构造蚀变岩型金矿的形成主要与热液蚀变作用有关,石英脉型金矿的形成,则可能主要与岩浆热液与变质热液的混合作用有关。矿质主要源自晋宁期岩浆岩,成矿流体和热能主要来自海西期花岗岩。矿床为剪切带容矿的中低温热液金矿床。 Shibagougou gold deposit is a vein-type gold deposit in the southwest of Henan Province discovered in recent years. According to the geochemistry of fluid inclusions, the geochemical characteristics of ore-forming fluids are analyzed, and the sedimentary mechanism of gold and the genesis of the deposit are discussed. The formation of altered rock type gold deposits is mainly related to hydrothermal alteration. The formation of quartz vein type gold deposits may be mainly related to the mixing of magmatic hydrothermal fluids and metamorphic hydrothermal fluids. Mineral mainly from the Jinning period magmatic rocks, ore-forming fluids and heat mainly from the Hercynian granite. The deposit is a mid-low temperature hydrothermal gold deposit hosted by a shear zone.
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