| 河南崤山金矿床流体包裹体及同位素特征 |
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| 引用本文： | 李铁刚,孟宪锋,王国瑞,肖建辉,吴昊,范海洋,员晓琪.河南崤山金矿床流体包裹体及同位素特征[J].矿床地质,2018,37(2):403-419. |
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| 作者姓名： | 李铁刚 孟宪锋 王国瑞 肖建辉 吴昊 范海洋 员晓琪 |
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| 作者单位： | 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;河南省地质矿产勘查开发局第一地质矿产调查院;河南省金银多金属成矿系列与深部预测重点实验室;万宝矿产有限公司;武警黄金第四支队;崤山黄金矿业有限公司 |
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| 基金项目： | 中国地质调查局地质调查项目（编号：12120114035201）和中国地质调查局中国矿产地质与成矿规律综合集成和服务（矿产地质志）项目（编号：DD20160346）资助 |
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| 摘 要： | 崤山金矿床位于华北克拉通南缘的豫西地区,矿体大多呈脉状产于断裂带内。成矿期可以划分为3个阶段:(1)石英-黄铁矿阶段;(2)石英-多金属硫化物阶段;(3)石英-碳酸盐阶段。成矿期石英中发育气液两相水溶液包裹体(WL型)和H_2O-CO_2包裹体(C型)。石英-黄铁矿阶段发育WL型和C型包裹体,它们的均一温度为300~393℃,盐度w(NaCl_(eq))为1.6%~11.0%,密度介于0.57~0.82 g/cm~3;石英-多金属硫化物阶段亦发育WL型和C型包裹体,它们的均一温度为261~298℃,盐度w(NaCl_(eq))为1.1%~11.8%,密度介于0.74~0.89 g/cm~3;石英-碳酸盐阶段仅见WL型包裹体,其均一温度为193~258℃,盐度w(NaCl_(eq))介于2.2%~12.7%,密度为0.87~0.97g/cm~3。成矿流体具有中高温、中低盐度、低密度等特征,属于H_2O-NaCl±CO_2体系。崤山金矿石英的δ~(18)OH_2O值介于0.7‰~4.5‰之间,δDV-SMOW值介于-47.8‰~-69.5‰之间。H-O同位素结果表明成矿流体主要来源于岩浆水。矿石硫化物的δ_(34)SV-CDT值为0.7‰~3.9‰,206Pb/204Pb值为17.391~17.728,~(207)Pb/~(204)Pb值为15.420~15.577,~(207)Pb/~(204)Pb值为37.420~37.923。S-Pb同位素结果表明成矿物质主要来源于花岗质岩浆。崤山金矿为中温热液脉型金矿,流体相分离和温度的降低是导致矿质沉淀的主要机制。
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| 关 键 词： | 地球化学 流体包裹体 H-O-S-Pb同位素 崤山金矿 豫西 华北克拉通南缘 |
| 收稿时间： | 2017/10/20 0:00:00 |
| 修稿时间： | 2018/2/8 0:00:00 |
Fluid inclusions and isotopic characteristics of Xiaoshan gold deposit in Henan Province |
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| LI TieGang,MENG XianFeng,WANG GuoRui,XIAO JianHui,WU Hao,FAN HaiYang and YUAN XiaoQi.Fluid inclusions and isotopic characteristics of Xiaoshan gold deposit in Henan Province[J].Mineral Deposits,2018,37(2):403-419. |
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| Authors: | LI TieGang MENG XianFeng WANG GuoRui XIAO JianHui WU Hao FAN HaiYang and YUAN XiaoQi |
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| Institution: | MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China,No.1 Institute of Geological and Mineral Resources Survey, Development of Geology and Mineral Resources of Henan Province, Luoyang 471000, Henan, China;Key Laboratory of Au-Ag-Polymetallic Deposit Series and Deep-seated Metallogenic Prognosis of Henan Province, Luoyang 471000, Henan, China,Wanbao Mining Co., Ltd., Beijing 100053, China,No.1 Institute of Geological and Mineral Resources Survey, Development of Geology and Mineral Resources of Henan Province, Luoyang 471000, Henan, China;Key Laboratory of Au-Ag-Polymetallic Deposit Series and Deep-seated Metallogenic Prognosis of Henan Province, Luoyang 471000, Henan, China,Fourth Detachment of Gold Headquarters, Chinese Armed Police Force, Liaoyang 111000, Liaoning, China,MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China and Xiaoshan Gold Mining Co., Ltd., Sanmenxia 472000, Henan, China |
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| Abstract: | |
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| Keywords: | geochemical fluid inclusions H-O-S-Pb isotopes Xiaoshan gold deposit western Henan Province southern margin of the North China Craton |
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