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| 山西省义兴寨金矿流体包裹体特征及其地质意义 | |
| 引用本文： | 路英川,葛良胜,申维,王治华,郭晓东,王梁,周传芳.山西省义兴寨金矿流体包裹体特征及其地质意义[J].矿床地质,2012,31(1):83-93. |
| 作者姓名： | 路英川 葛良胜 申维 王治华 郭晓东 王梁 周传芳 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京100083;中国人民武装警察部队黄金地质研究所,河北廊坊065000 2. 中国人民武装警察部队黄金地质研究所,河北廊坊,065000 3. 中国地质大学地球科学与资源学院,北京,100083 4. 中国地质大学地球科学与资源学院,北京100083;中国人民武装警察部队黄金部队第三支队,黑龙江哈尔滨150086 |
| 基金项目： | 本文得到全国危机矿山接替资源勘查项目(20089925)和国家自然科学基金项目(批准号41172302)的资助 |
| 摘 要： | 山西省繁峙县义兴寨金矿为一大型石英脉型矿床。对义兴寨矿区金矿石中的流体包裹体进行了岩相学和显微测温研究,结果表明:义兴寨金矿各成矿阶段金矿石中的流体包裹体主要为气液两相的H2O包裹体,其次为纯气相H2O包裹体和含CO2包裹体。激光拉曼探针分析表明,第Ⅰ阶段流体包裹体除SO2特征峰外,还出现了CO2特征峰和C6H6特征峰,第Ⅱ阶段石英中流体包裹体的气相成分伴有一定量的SO2。第Ⅰ阶段包裹体的完全均一温度(均一至液相)为149~384℃,第Ⅱ阶段包裹体的完全均一温度(均一至液相或气相)为151~373℃,富气相包裹体多数在达到均一前发生爆裂,第Ⅲ阶段包裹体的完全均一温度(均一至液相)为246~325℃,第Ⅳ阶段包裹体的完全均一温度(均一至液相)为223~269℃。成矿流体为中温、低盐度的浆控热液,主成矿期发生流体沸腾并在第Ⅱ阶段有不同来源流体混入,后期有大气降水的加入。早期成矿阶段的流体具有深部地壳甚至地幔的特征。 |
| 关 键 词： | 地球化学 流体包裹体 成矿流体 义兴寨 山西 |
| 收稿时间： | 2011/3/14 0:00:00 |
| 修稿时间： | 2011/10/29 0:00:00 |
Characteristics of fluid inclusions of Yixingzhai gold deposit in Shanxi Province and their geological significance |
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| LU YingChuan,GE LiangSheng,SHENG Wei,WANG ZhiHu,GUO XiaoDong,WANG Liang and ZHOU ChuanFang.Characteristics of fluid inclusions of Yixingzhai gold deposit in Shanxi Province and their geological significance[J].Mineral Deposits,2012,31(1):83-93. | |
| Authors: | LU YingChuan GE LiangSheng SHENG Wei WANG ZhiHu GUO XiaoDong WANG Liang and ZHOU ChuanFang |
| Institution: | China University of Geosciences, Beijing 100083;Gold Geological Institute of CAPF, Langfang 065000, Hebei, China; China;Gold Geological Institute of CAPF, Langfang 065000, Hebei, China; China;China University of Geosciences, Beijing 100083;Gold Geological Institute of CAPF, Langfang 065000, Hebei, China; China;Gold Geological Institute of CAPF, Langfang 065000, Hebei, China; China;China University of Geosciences, Beijing 100083;Gold Geological Institute of CAPF, Langfang 065000, Hebei, China; China;China University of Geosciences, Beijing 100083;No. 3 Gold Geological Party of CAPF, Harbin 150086, Heilongjiang, China |
| Abstract: | The Yixingzhai gold deposit is a large-size quartz-vein type ore deposit.The ore microscopy and measured temperature data of fluid inclusions reveal that inclusions at various ore-forming stages of the Yixingzhai gold deposits are mainly gas-liquid two-phase(H2O or H2O-CO2) inclusions and subordinately pure volatile inclusions.Raman analysis of the fluid inclusions indicates that,in the gaseous phase,SO2,CO2 and C6H6 are existent at ore-forming stage Ⅰ,and SO2 is existent at stageⅡ in addition to water vapor.The homogenization temperatures of ore-forming stage Ⅰare 149~384℃(homogenization to liquid),and those of stage Ⅱare 151~373℃(homogenization to liquid or gas).Volatile-rich fluid inclusions are mostly decrepitated before homogenization.The homogenization temperatures of stage Ⅲ are 246~325℃(homogenization to liquid),and those of stage Ⅳare 223~269℃(homogenization to liquid).The ore-forming fluids are of the epithermal-mesothermal and low salinity hypothermal system.The ore-forming fluids boiled very impetuously at the main stage,the meteoric water participated the activity during the late stage,and the ore-forming fluids were mixed with other fluids from different sources at stage Ⅱ.The reducibility of the early ore-forming stage fluid came from continental deep crust or the mantle. |
| Keywords: | geochemistry fluid inclusion ore-forming fluid Yixingzhai Shanxi Province |
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