新疆彩霞山铅锌矿床地质及同位素地球化学特征

Research on Geology and Isotopic Geochemistry of Caixiashan Pb-Zn Deposit in Xinjiang

对彩霞山铅锌矿床矿石矿物和围岩的硫、铅同位素及脉石矿物的氢、氧同位素地球化学特征进行了研究。分析结果显示,成矿物质来源于地壳和地幔的混合;硫来源主要为同化了海水硫酸盐的岩浆硫,并有少量生物还原硫参与。氢、氧同位素指示成矿流体早期可能有岩浆热液,主成矿期主要是地层中的建造水参与成矿。

The geochemical characteristic of S and Pb isotope compositions of the ore minerals and wall rocks, and H and O isotope compositions of gangue rocks from the Caixiashan Pb-Zn deposit in Xinjiang are studied. The results show that the metal is mainly derived from the mixture of mantle and crust, the magmatic sulfur, which assimilate silicon in the sea with a small amount of the sulfur made by biology in reductive condition. H and O isotopes reveal that the metallogenic fluid may has magmatic hydrothermal in early times and the formational water in the stratum participated the maineralization during the main metallizing phase.