| 赣南西华山钨矿床的流体混合作用:基于H、O同位素模拟分析 |
| |
| 引用本文： | 魏文凤,胡瑞忠,彭建堂,毕献武,宋生琼,石少华.赣南西华山钨矿床的流体混合作用:基于H、O同位素模拟分析[J].地球化学,2011,40(1):45-55. |
| |
| 作者姓名： | 魏文凤 胡瑞忠 彭建堂 毕献武 宋生琼 石少华 |
| |
| 作者单位： | 中国科学院地球化学研究所矿床地球化学国家重点实验室;中国科学院研究生院; |
| |
| 基金项目： | 国家重点基础研究发展计划项目(2007CB411408) |
| |
| 摘 要： | 赣南西华山钨矿床是我国典型的大型石英脉型黑钨矿矿床.H、O同位素的研究表明,该矿床δD值-43‰～-66‰,石英δ18O值2.3‰～13.2‰,对应的成矿流体δ18O值-8.7‰～7.6‰,表明成矿流体为岩浆水与大气降水的混合流体.不同机制下矿物O同位素模拟计算表明,冷却、沸腾和混合作用所形成矿物的O同位素组成明显不同...
|
| 关 键 词： | 石英脉型钨矿床 O同位素 混合作用 模拟分析 西华山 |
Fluid mixing in Xihuashan tungsten deposit, Southern Jixangxi Province: Hydrogen and oxygen isotope simulation analysis |
| |
| WEI Wen-feng,HU Rui-zhong,PENG Jian-tang,BI Xian-wu,SONG Sheng-qiong,SHI Shao-hua.Fluid mixing in Xihuashan tungsten deposit, Southern Jixangxi Province: Hydrogen and oxygen isotope simulation analysis[J].Geochimica,2011,40(1):45-55. |
| |
| Authors: | WEI Wen-feng HU Rui-zhong PENG Jian-tang BI Xian-wu SONG Sheng-qiong SHI Shao-hua |
| |
| Institution: | WEI Wen-feng1,2,HU Rui-zhong1,PENG Jian-tang1,BI Xian-wu1,SONG Sheng-qiong1,2 and SHI Shao-hua1,2 1.State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049 |
| |
| Abstract: | Xihuashan tungsten deposit in Southern Jiangxi Province is a large typical quartz-vine type wolframite deposit. Based on hydrogen and oxygen isotope data measured in this paper and others, the δD values of fluid inclusions are 43‰- 66‰ and the 3180 values of quartz in the deposits vary between 2.3‰ and 13.2‰while 3180 values of the mineralizing fluids between 8.7‰ and 7.6‰ is suggested that the ore fluids were a mixture between magmatic water and meteoric water. The oxygen isotope composition of minerals precipitating by each mechanism was modeled. It is evident that cooling, boiling and fluid mixing have a contrasting influence on the oxygen isotope composition of the precipitating minerals. The mixing of a magmatic fluid with meteoric water reproduces the observed 3180 composition of the ore and gangue minerals remarkably well. Cooling or boiling is not a major process in the evolution of ore-forming fluids, while the magmatic water mixed with meteoric water may result in wolframite deposition. |
| |
| Keywords: | quartz-vine type tungsten deposit oxygen isotope mixing fluid source Xihuashan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
