| 赣南茅坪钨矿床黄玉单晶流体包裹体研究 |
| Received:April 06, 2016 Revised:June 21, 2017 点此下载全文 |
| 引用本文：ZHOU LongQuan,LI GuangLai,SU Ye,WANG XiaoLin,TANG Ao,WEI XingLin,CHEN GuangXu,LIU ZhenYu.2017.A preliminary study of fluid inclusions of topaz crystal from Maoping tungsten deposit, southern Jiangxi Province[J].Mineral Deposits,36(4):921~934 |
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| Author Name | Affiliation | E-mail | | ZHOU LongQuan | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | | | LI GuangLai | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | liguanglai@ecit.cn | | SU Ye | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | | | WANG XiaoLin | Raman Laboratory of Institute of Energy Sciences, Nanjing University, Nanjing 210093, Jiangsu, China | | | TANG Ao | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | | | WEI XingLin | Jiangxi Nonferrous Metals Geological Exploration Bureau, Nanchang 330025, Jiangxi, China | | | CHEN GuangXu | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | | | LIU ZhenYu | Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330013, Jiangxi, China | |
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| 基金项目:本文由国家自然科学基金项目（编号：41302053）和博士启动资金（编号：DHBK201120）联合资助 |
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| 中文摘要:文章以赣南茅坪大型钨矿床成矿早阶段形成的黄玉单晶为研究对象，对其中的流体包裹体开展了岩相学、显微测温以及激光拉曼光谱研究。结果显示，茅坪钨矿床黄玉单晶中的流体包裹体以富液两相包裹体为主，同时发育有单相包裹体、富二氧化碳的三相包裹体以及含子矿物包裹体。其中，含子矿物包裹体发育是本矿床黄玉中包裹体的重要特征，子矿物成分有方解石、石英、石盐等；流体包裹体的均一温度介于200~509℃之间，峰值位于420~500℃之间，盐度w（NaCleq）为4.32%~19.22%，峰值介于17%~19%，较前人获得的石英脉型钨矿床成矿温度和盐度均高出许多，其峰值（420~500℃）在一定程度上衔接了石英脉型黑钨矿高温阶段的演化历史；黄玉单晶中包裹体还具有富含CO2、CH4、N2等挥发分的特征。综上所述，笔者认为石英脉型钨矿的成矿流体在早阶段具有高温、中高盐度、富挥发分、富含多种离子的特征。 |
| 中文关键词:地球化学 黄玉单晶 流体包裹体 茅坪钨矿 赣南 |
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| A preliminary study of fluid inclusions of topaz crystal from Maoping tungsten deposit, southern Jiangxi Province |
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| Abstract:Topaz crystals formed at the early stage from the Maoping tungsten deposit were selected to study in this paper, Microscopy, Linkam THMS600 heating and freezing stage and high resolution Raman spectroscopy were used to study fluid inclusions in topaz. Some conclusions have been reached:fluid inclusions can be divided into several types, among which two-phase fluid inclusion is the most important, and single phase type fluid inclusions, CO2-rich fluid inclusions and daughter minerals bearing fluid inclusions can also be found in topaz. Daughter minerals include calcite, quartz and halite etc. The homogenization temperatures of liquid-rich fluid inclusions are between 200℃ and 509℃, clustered between 420℃ and 500℃; the salinities vary from 4.32% to 19.22%, but mainly vary from 17% to 19%. Fluid inclusions in topaz are rich in CO2 and contain a little CH4 and N2; these volatiles were closely associated with migration and enrichment of tungsten. Fluid inclusions in topaz crystal mainly record characteristics of the early stage fluid of quartz vein type tungsten deposits; high temperature, medium-high salinity, rich volatiles and a variety of ions constitute important characteristics of the early stage fluid. |
| keywords:geochemistry topaz crystal fluid inclusion Maoping tungsten deposit southern Jiangxi |
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