| 四川冕宁木落稀土矿床稀土元素迁移与沉淀机制:来自稀土矿物中流体包裹体的证据 |
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| 引用本文： | 谢玉玲,田世洪,侯增谦,陈伟,尹淑苹,高升.四川冕宁木落稀土矿床稀土元素迁移与沉淀机制:来自稀土矿物中流体包裹体的证据[J].岩石学报,2008,24(3). |
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| 作者姓名： | 谢玉玲 田世洪 侯增谦 陈伟 尹淑苹 高升 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083
2. 中国地质科学院地质研究所,北京,100037 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展规划项目 |
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| 摘 要： | 木落稀土矿床位于印度-亚洲陆陆碰撞带之东部转换带,是四川冕宁-德昌稀土矿带的重要组成部分,其成矿与喜山期岩浆碳酸岩关系密切.本文在详细的矿床地质研究基础上,通过矿床中主要稀土矿物氟碳铈矿中流体包裹体岩相学、显微测温分析、包裹体成分的LRM分析和包裹体中子矿物相的SEM/EDS分析等,对与稀土矿化有关的成矿流体的特征、演化及稀土迁移与沉淀的机制进行了讨论.结果表明,与稀土成矿有关的流体为富CO2、H2、K 、Na 和SO2-4的中高温、高压超临界流体.超临界流体对稀土的迁移起到重要作用,温度、压力降低造成的超临界流体中CO2相与水溶液相的分离是造成稀土矿物沉淀的主要机制.
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| 关 键 词： | 四川冕宁 木落稀土矿床 富CO2和H2流体包裹体 超临界流体 稀土沉淀机制 |
Discussion of migration and precipitation mechanics in Muluo REE deposit Mianning county, west Sichuun province: Evidence from fluid inclusions in bastnacsite |
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| XIE YuLing,TIAN ShiHong,HOU ZengQian,CHEN Wei,YIN ShuPing,GAO Sheng.Discussion of migration and precipitation mechanics in Muluo REE deposit Mianning county, west Sichuun province: Evidence from fluid inclusions in bastnacsite[J].Acta Petrologica Sinica,2008,24(3). |
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| Authors: | XIE YuLing TIAN ShiHong HOU ZengQian CHEN Wei YIN ShuPing GAO Sheng |
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| Institution: | XIE YuLing~1 TIAN ShiHong~2 HOU ZengQian~3 CHEN Wei~3 YIN ShuPing~3 GAO Sheng~1 1.School of Civil , Environmental Engineering,University of Science , Technology Beijing,Beijing 100083,China 2.Institute of Mineral Resource,Chinese Academy of Geological Sciences,Beijing 100037,China 3.Institute of Geology,China |
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| Abstract: | Himalayan Mianning-Dechang REE belt,one of the most important ore-belt in China,is located in west margin of Yangtze craton in East India-Asia collision zone.Muluo REE deposit is one important part of them.It located at the northerm part of this belt.The Muluo REE deposit situated tectonically located on the northern Jinpingshan Mountains,a Cenozoic intracontinental orogenic belt in southwestern China.Based on petrography,microthermometry,LRM and SEM/EDS analysis of fluid inclusions in bastnaesite,this pape... |
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| Keywords: | Muluo REE deposit CO_2 and H_2-rich fluid inclusions Supercritical fluids REE precipitation |
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