| 西藏雄村矿区Ⅲ~#矿体成矿流体特征 |
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| 引用本文： | 郎兴海,唐菊兴,胡正华,谢富伟,黄勇.西藏雄村矿区Ⅲ~#矿体成矿流体特征[J].金属矿山,2014,32(9):95-98. |
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| 作者姓名： | 郎兴海 唐菊兴 胡正华 谢富伟 黄勇 |
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| 作者单位： | 1.成都理工大学地球科学学院，四川 成都 610059；2.中国地质科学院矿产资源研究所，北京 100037；3.江西省地质调查研究院，江西 南昌 330100；4.中国地质调查局成都地质调查中心，四川 成都 610081 |
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| 基金项目： | 国家自然科学基金项目，国家重点基础研究发展计划项目(973项目)，中国地质调查局项目，四川省矿产资源研究中心项目，四川省青年科技基金项目，“构造成矿学理论发展与实践”项目 |
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| 摘 要： | 为了查明雄村Ⅲ#矿体成矿流体特征以及成矿机制,通过详细的地质特征分析,结合主成矿阶段脉石英的流体包裹体及氢、氧同位素的测试进行研究。结果显示,主成矿阶段的成矿流体均一温度主要为170~310℃(峰值220℃),盐度变化范围为1.20%~30.1%;成矿流体的氢同位素含量为-134.3‰~-118.5‰,氧同位素含量为-0.8‰~-0.2‰,表明成矿流体为岩浆水和大气降水的混合,具有中温、中低盐度的特征。雄村Ⅲ#矿体成矿物质的沉淀与岩浆水和大气降水混合以及钾硅酸盐化蚀变过程中磁铁矿的结晶有关。
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| 关 键 词： | 斑岩 成矿流体 氢氧同位素 |
Characteristics of Ore-forming Fluids of the No.Ⅲ Deposit in Xiongcun District,Tibet |
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| Lang Xinghai,Tang Juxing,Hu Zhenghua,Xie Fuwei,Huang Yong.Characteristics of Ore-forming Fluids of the No.Ⅲ Deposit in Xiongcun District,Tibet[J].Metal Mine,2014,32(9):95-98. |
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| Authors: | Lang Xinghai Tang Juxing Hu Zhenghua Xie Fuwei Huang Yong |
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| Affiliation: | 1.College of Earth Science,Chengdu University of Technology,Chengdu 610059,China；2.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China；3.Jiangxi institute of Geological survey,Nanchang 330100, China；4.Chengdu Center of China Geological Survey,Chengdu 610081,China; |
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| Abstract: | In order to find out the ore-forming fluid characteristics and metallogenic mechanism of Xiongcun No.III deposit,the geological characteristics of No.III deposit is analyzed in detail and tests on the inclusions at quartz-sulfide veins and hydrogen and oxygen isotopes are conducted.The research results show that,the homogenization temperatures and salinities of fluid inclusions range from 170 ℃ to 310 ℃ (peak temperature at 220 ℃) and 1.20% to 30.1% respectively.Its hydrogen and oxygen isotopes range from -134.3‰ to -118.5‰ and -0.8‰ to -0.2‰ respectively,which indicates that,the ore-forming fluid is a mixture of magmatic water and atmospheric precipitation,and has the characteristics of middle temperature and middle-low salinities.The minerals precipitated of Xiongcun No.III deposit mainly relates to mixture of magmatic water and atmospheric precipitation and the crystallization of magnetite within potassic alteration zone. |
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| Keywords: | Porphyry Ore-forming fluid Hydrogen and oxygen isotopes |
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