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新疆阿尔泰南缘克因布拉克铜锌矿床成矿流体的氦-氩同位素示踪/Helium and Argon Isotopes Tracing for Sources of Ore-forming Fluid in the Keyinbulake Copper-zinc Deposit,Southern of Altay,Xinjiang[J]
Authors
Geng Xinxia
Jiang Guohao
+13 more
Li Qiang
Liu Feng
Yang Fuquan
Zhang Zhixin
中国地质科学院矿产资源研究所,国土资源部成矿作用与资源评价重点实验室,北京 100037
中国科学院地球化学研究所,矿床地球化学国家重点实验室,贵州 贵阳 550002
中国科学院新疆生态与地理研究所,新疆矿产资源研究中心,新疆 乌鲁木齐 830011
刘锋
张志欣
李强
杨富全
耿新霞
蒋国豪
Publication date
1 January 2014
Publisher
Abstract
克因布拉克铜锌矿床赋存于二长花岗岩外接触带的上志留-下泥盆统康布铁堡组黑云石英片岩、变质石英砂岩中,矿体呈似层状、透镜状及脉状。本文对铜锌矿石中的黄铁矿流体包裹体氦和氩同位素组成进行了研究。黄铁矿中流体包裹体的4He含量为0.241×10-7~5.288×10-7 cm3STP/g,Rc/Ra值为0.95~1.89,幔源He的含量为14.1%~28.8%,表明成矿流体中氦主要来源于地壳,存在幔源氦的加入。40Ar 含量为4.345×10-8~7.752×10-8 cm3STP/g,40Ar/36Ar比值变化于302.10~436.96,40Ar*含量为2.2%~32.4%,表明成矿流体中存在含有放射性成因氩的大气降水加入。结合矿床地质特征及氢、氧、碳、硫同位素特征,认为成矿流体来源于高温深源壳幔混合成因的岩浆流体,具大气氩同位素组成特征的低温大气降水
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Last time updated on 29/11/2016