| 山西灵丘支家地铅锌银矿矿石微观组构及地球化学特征对成矿期次的指示意义 |
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| 引用本文： | 覃娴瑟,吴堑虹,于洪立.山西灵丘支家地铅锌银矿矿石微观组构及地球化学特征对成矿期次的指示意义[J].大地构造与成矿学,2011,35(1):118-127. |
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| 作者姓名： | 覃娴瑟 吴堑虹 于洪立 |
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| 作者单位： | 覃娴瑟,吴堑虹,QIN Xianse,WU Qianhong(中南大学,地学与环境工程学院,教育部有色金属成矿预测重点实验室,湖南,长沙,410083);于洪立,YU Hongli(中国冶金地质总局三局,山西,太原,030002) |
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| 基金项目： | 国家自然科学基金项目，国土资源部项目 |
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| 摘 要： | 山西灵丘支家地铅锌银矿床为中生代隐爆角砾岩型多金属热液矿床。通过显微镜、扫描电镜对矿石进行观察,发现矿石发育显示不同成矿阶段的矿物组合,矿物溶蚀结构、硫化物角砾、脉状、环带等结构构造,并分析了这些结构构造对成矿期次的指示意义;黄铁矿、闪锌矿、方铅矿等硫化物的S、Fe、Cu、Zn、Pb、Ag、In、Sn、Sb元素含量分布显示早期成矿阶段形成的硫化物较晚期的富Ag、In、Sn、Sb;不同成矿阶段的方铅矿Pb同位素组成没有明显差别。矿石的微观结构构造、硫化物元素组成特征说明该矿区发育两次成矿作用,而且二者间存在构造及热液蚀变的间断,Pb同位素特征则说明两次成矿发生于同一大地构造背景,该认识为该矿成矿模型的建立及找矿工作提供了新思路。
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| 关 键 词： | 支家地铅锌银矿 矿石微观特征 成矿期次 |
Microstructure and Geochemical Characteristics of the Ores from the Zhijiadi Pb-Zn-Ag Deposit,Shanxi Province |
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| QIN Xianse,WU Qianhong,YU Hongli.Microstructure and Geochemical Characteristics of the Ores from the Zhijiadi Pb-Zn-Ag Deposit,Shanxi Province[J].Geotectonica et Metallogenia,2011,35(1):118-127. |
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| Authors: | QIN Xianse WU Qianhong YU Hongli |
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| Institution: | QIN Xianse1,WU Qianhong1 and YU Hongli2 (1.Key Laboratory of Nonferrous Metals and Metallogenic Prediction under Ministry of Education & College of Geology and Environmental Engineering,Central South University,Changsha 410083,Hunan,China,2.The Third Branch of China Metallurgy,Taiyuan 030002,Shanxi,China) |
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| Abstract: | The Zhijiadi Pb-Zn-Ag deposit in Lingqiu,Shanxi Province,is a Mesozoic crypto-explosion breccia-type polymetallic hydrothermal deposit. Microscope and SEM investigations on the composition,texture and structure of the ores reveal that there are two types of mineral assemblages which suggests two periods of mineralization. Analyses of the galenas,sphalerites and pyrites demonstrate that Ag,In,Sn,and Sb are relative enriched in the minerals formed in the early stage. The Pb isotopic compositions of the sulfid... |
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| Keywords: | Zhijiadi Pb-Zn-Ag deposit microscopic characteristics of ore period of mineralization |
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