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湘西花垣铅锌矿田位于扬子准地台东南缘,地跨鄂黔台褶带和江南地轴两个二级大地构造单元(叶红专,1991),处湘西-鄂西铅锌成矿带中部,是中国重要的铅锌资源战略接续区,有望成为世界级铅锌矿田。大脑坡铅锌矿床是近年来矿田内新发现的又一超大型矿床,位于矿田北部,花垣-张家界断裂之南东,矿体呈似层状、透镜状,主要赋存于下寒武统清虚洞组下段藻灰岩和砂屑灰岩中。本文通过对大脑坡铅锌矿床各成矿阶段与矿石矿物伴生的方解石进行流体包裹体研究,探明成矿流体性质与演
The Huaxuan Pb-Zn orefield in the Xiangxi area is located on the southeast margin of the Yangtze Platform, covering the two second-grade tectonic units (Yehzhuan, 1991) of the Eqiantai fold and the Jiangnan axis. The middle part of the western Hunan- , Is China’s important succession zone of lead and zinc resources strategy and is expected to become a world-class lead-zinc ore field. The Bashopian lead-zinc deposit is another newly discovered superlarge deposit within the ore field in recent years. It is located in the northern part of the ore field and is located in the east of the Huayuan-Zhangjiajie fault. The ore body is stratified and lenticular and mainly occurs in the Lower Cambrian Qing Caves in the lower algal limestone and calcareous limestone. In this paper, fluid inclusions of calcite associated with ore minerals in each ore forming stage of the Bachopian lead-zinc deposit are studied to find out the characteristics of the ore-forming fluid