江西省村前铜多金属矿床成矿流体性质与物质来源:流体包裹体及硫铅同位素证据
发布时间：2018-08-16 16:59
【摘要】：为揭示村前铜多金属矿床成矿流体性质与物质来源,为矿床成因的深入研究提供依据,对铁铜硫化物石英脉中的流体包裹体和金属硫化物进行硫、铅同位素分析测试。结果显示,铁铜硫化物石英脉中存在纯液相、气液两相、气液固三相和纯(极富)气相4种类型流体包裹体。流体包裹体均一温度范围为256~417℃,流体盐度则分为明显的两个族群,一为低盐度(7.15%~13.88%NaCl_(eqv))的气液两相包裹体,另一为高盐度(31.93%~43.79%NaCl_(eqv))的气液固三相包裹体,且二者在空间上具有共存关系,代表了流体的沸腾作用,成矿流体属中高温、高盐度岩浆热液流体。硫、铅同位素研究表明,矿石硫同位素组成为接近1的正值,属深源硫;铅同位素指示矿石中铅主要为上部地壳来源,有少量幔源铅或壳幔混源的造山带铅,表明上部地壳对矿质来源具有重要的贡献作用。
[Abstract]:In order to reveal the ore-forming fluid property and material source of Cu-Qianqian copper polymetallic deposit and to provide the basis for further study on the genesis of the deposit, the sulfur and lead isotopic analysis of fluid inclusions and metal sulphides in the quartz veins of iron-copper sulphide were carried out. The results show that there are four types of fluid inclusions: pure liquid phase, gas-liquid two-phase, gas-liquid-solid three-phase and pure (extremely rich) gas phase. The homogenization temperature range of fluid inclusions is 2561,417 鈩，
本文编号：2186609
[Abstract]:In order to reveal the ore-forming fluid property and material source of Cu-Qianqian copper polymetallic deposit and to provide the basis for further study on the genesis of the deposit, the sulfur and lead isotopic analysis of fluid inclusions and metal sulphides in the quartz veins of iron-copper sulphide were carried out. The results show that there are four types of fluid inclusions: pure liquid phase, gas-liquid two-phase, gas-liquid-solid three-phase and pure (extremely rich) gas phase. The homogenization temperature range of fluid inclusions is 2561,417 鈩，
本文编号：2186609
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