| 傅晓明,戴塔根,息朝庄,刘伟,刘旭.青海双朋西金铜矿床的成矿流体特征及流体来源[J].地质找矿论丛,2010,25(1):24-29 |
| 青海双朋西金铜矿床的成矿流体特征及流体来源 |
| CHARACTERISTICS OF ORE-FORMING FLUID AND GENESIS OF THE SHUANGPENGXI GOLD-COPPER DEPOSITIN QINGHAI PROVINCE |
| 投稿时间：2008-12-22 |
| DOI：10.6053/j.issn.1001-1412.2010.1. 005 |
| 中文关键词: 成矿流体 包裹体 双朋西金铜矿 青海省 |
| 英文关键词:Ore-forming fluid inclusion Shuangpengxi gold-copper deposit Qinghai province |
| 基金项目:国家973项目(编号2002CG412607);国家科技攻关项目(编号2004BA615-02);湖南省自然科学基金(编号07JJ6071)资助 |
| 作者 | 单位 | E-mail | | 傅晓明 | 中南大学, 地学与环境工程学院, 长沙, 410083 | | | 戴塔根 | 中南大学, 地学与环境工程学院, 长沙, 410083 | | | 息朝庄 | 湖南有色金属控股集团, 长沙, 410015 | xczcsummmmmm@126.com | | 刘伟 | 湖南有色金属控股集团, 长沙, 410015 | | | 刘旭 | 中南大学, 地学与环境工程学院, 长沙, 410083 | |
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| 中文摘要: |
| 通过对双朋西金铜矿床流体包裹体岩相学、测温学及矿石铅、硫同位素等的分析,研究成矿流体性质和演化、成矿流体来源.结果表明:流体包裹体主要为气液两相包裹体,另有少量液相和含子矿物包裹体.包裹体液相成分阳离子以Na+,K+,Ca2+为主,阴离子主要以SO42-,Cl-为主;气相以H2O,CO2为主.均一温度范围为210~370℃和370~460℃,盐度3.0%~6.5%,密度集中于0.600~0.800g/cm3,压力主要为8.0~20.0MPa,为中高温、中等盐度、中等密度、中等压力的成矿流体.铅同位素206Pb/204Pb为18.058~18.710,207Pb/204Pb为15.581~15.641,208Pb/204Pb为38.191~38.531,δ(34S)为+3.1×10-3~+6.2×10-3,平均值为+4.42×10-3,成矿流体铅、硫同位素来源为壳幔混合源. |
| 英文摘要: |
| Based on study of the fluid inclusion,thermometry and isotope analyses,the characteristics of ore-forming fluid,fluid evolution and the origin of Shuangpengxi gold-copper deposit were discussed and systematically studied.The results showed that these inclusions are generally consisted of 2(gas and liquid) phases.and minor liquid and solid sub-mineral phase.The liquid phase includes cations dominated by Na+,K+,Ca2+and ions by SO2-4,Cl-and gas phase H2O,CO2.The homogenization temperature,salinity and density and pressure of the fluid inclusions are medium ones ranged from 210℃ to 460℃,and 3.0% to 6.5%,and 0.600 to 0.800 g/cm3,and 8.0 to 20.0 MPa,respectively.Analysis of 206Pb/204Pb is in range of 18.058-18.710,207Pb/204Pb 15.581-15.641,208Pb/204Pb 38.191-38.531;δ(34S) value +3.1×10-3-+6.2×10-3(average +4.42×10-3) indicating the crust-mantle mixed origin of Pb and S. |
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