水口山Pb－Zn－Au矿田含矿流体的性质、来源及其环流历程

NATURE,SOURCE AND CONVECTION PATH OF THE ORE─BEARING FLUID IN THE SHUIKOUSHAN Pb─ Zn─Au OREFIELD

在矿床地质研究的基础上，从矿物包裹体的显微岩相学、均一化温度、成分、含盐度和Ｈ、０、Ｃ稳定同位素组成方面，探讨了水口山Ｐｂ─Ｚｎ─Ａｕ矿田含矿流体的性质、来源及其环流历程。含矿流体系由岩浆期后热液和地下水混合而成。对于水口山矿区而言，岩浆热液起着主导作用；对于康家湾矿区而言，岩浆期后热液和地下水热液均起着重要作用。热液成矿期从早到晚，随着温度和含盐度的逐渐降低，地下水中雨水／地层卤水的比值逐渐增大。含矿流体的环流历程经历了５个阶段。

Based on investigation of ore deposit geology, a Systematic Study has been made on H,O,C Stable isotopic compositions and mineral inclusions from their micrography,homogenization temperature,composition, salinity. The ore─bearing fluid is constrained in the Shuikoushan Pb─Zn─Au ore field about its nature,source and convection path.It is a mixture district is dominated by the former.In the Kangjiawan ore district,however,both kinds of fluids are important.With evolution of the hydrothermal metallogenesis,when temperature and salinity are progressively decreased, ratio of meteoric water/ stratum brine in the subsurface water is increased.Convection of the ore─bearing fluid saw 5 periods.