| 彭相林,路远发,陈郑辉,汪群英,熊险峰.江西大吉山钨矿床流体包裹体研究[J].矿产勘查,2013,4(3):289-297 |
| 江西大吉山钨矿床流体包裹体研究 |
| Fluid inclusion study on the Dajishan tungsten deposit in Jiangxi Province |
| 投稿时间：2012-12-10 |
| DOI： |
| 中文关键词: 流体包裹体组合 成矿流体 石英脉型钨矿床 大吉山钨矿 江西 |
| 英文关键词: fluid inclusion assemblages ore-bearing fluid quartz-vein type tungsten deposit Dajishan tungsten deposit Jiangxi province |
| 基金项目:全国危机矿山接替资源找矿项目(编号:20089947)资助。 |
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| 中文摘要: |
| 文章采用流体包裹体组合的方法,在详细的岩相学研究的基础上,对大吉山钨矿床含矿石英脉中的流体包裹体进行了显微测温、拉曼探针和同位素的分析。结果表明,大吉山钨矿床具有明显的两期流体活动特征,流体组分主要为水及CO2,并含有少量的CH4、N2。成矿流体的主要来源为岩浆水,后期受到雨水影响。根据CO2的三相包裹体(Ⅱ型包裹体)测温数据计算得出成矿流体的捕获压力为75.6～93.1 MPa,按静岩压力换算成成矿深度最小为2.91～3.58 km。 |
| 英文摘要: |
| The Dajishan tungsten deposit is a well-known large-sized quartz -vein type tungsten-polymetallic deposit in southern Jiangxi Province. Based on detailed petrographic observations, the authors carried out micro-thermometric, Raman microscope probe and isotope analysis studies of fluid inclusions by applying means of Fluid Inclusion Assemblage ( FIA) in the Dajishan tungsten deposit. The study result indicates that the Dajishan tungsten mineralization process experienced two stages of fluid activities,and the mineralization fluid is characterized with main components of H2O and CO2 and minor CH4、N2. The hydrogen and oxygen isotopic study shows that the ore-bearing fluid is mainly derived from magmatic water, and infiltrated by the atmospheric water in the late stage. According to the homogeneous temperatures of three-phases CO2 fluid inclusions (Ⅱ-type inclusion),the ore-forming pressure is about 75.6～93.1 MPa by calculation,and the ore-forming depth is about 2.91～3.58 km in the case of the lithostatic pressure |
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