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| 西藏弄如日金矿流体包裹体研究 | |
| 引用本文： | 刘云飞,侯增谦,杨志明,谢玉玲,李应栩,杜等虎.西藏弄如日金矿流体包裹体研究[J].岩石学报,2011,27(7):2150-2158. |
| 作者姓名： | 刘云飞 侯增谦 杨志明 谢玉玲 李应栩 杜等虎 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083 2. 中国地质科学院地质研究所,北京,100037 3. 北京科技大学土木与环境工程学院,北京,100083 |
| 基金项目： | 本文受国家重点基础研究发展计划(973)项目(2011CB403100)、中国地质调查局地质调查项目(1212011121253)和行业基金项目2010011011)联合资助. |
| 摘 要： | 弄如日金矿床位于青藏高原南部冈底斯-喜马拉雅构造区的冈底斯构造岩浆带东段,是该成矿带上首次发现的浅成低温热液型金锑矿床。本文在详细的野外矿床地质研究基础上,通过对各期与成矿密切相关的流体包裹体岩相学、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,对与矿化有关的成矿流体的特征、演化以及金的迁移与沉淀机制进行了讨论。通过研究流体成矿过程包括:形成黄铁矿-石英组合的早期阶段,发育以含子矿物的三相包裹体为主,均一温度集中于256~335℃,盐度29.7%~38.9% NaCleqv;形成毒砂-富砷黄铁矿-石英组合的主成矿阶段,发育富CO2包裹体,均一温度集中于230~357℃,盐度1.81%~9.74% NaCleqv,CO2密度为0.16~0.29g·cm-3;形成辉锑矿-石英、雄黄-石英和碳酸岩脉组合的晚期阶段,发育水溶液包裹体,均一温度集中于134~245℃,盐度1.91%~8.95% NaCleqv。与金成矿有关的流体为中温、低盐度的富CO2、CH4、N2、Na+流体体系,成矿流体温度、压力降低造成了流体不混溶,使CO2相与水溶液相分离是造成金沉淀的主要机制。 |
| 关 键 词： | 流体包裹体 成矿流体 成矿机制 弄如日金矿 西藏 |
| 收稿时间： | 4/6/2011 12:00:00 AM |
| 修稿时间： | 2011/5/24 0:00:00 |
Study on fluid inclusion of Nongruri gold deposit, Tibet, China |
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| LIU YunFei,HOU ZengQian,YANG ZhiMing,XIE YuLing,LI YingXu and DU DengHu.Study on fluid inclusion of Nongruri gold deposit, Tibet, China[J].Acta Petrologica Sinica,2011,27(7):2150-2158. | |
| Authors: | LIU YunFei HOU ZengQian YANG ZhiMing XIE YuLing LI YingXu and DU DengHu |
| Institution: | School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, china;School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, china;School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China |
| Abstract: | The Nongruri gold deposit located in the Riduo Town, Maizhokunggar County, Tibetan Autonomous Region, is an epithermal Au-Sb deposit firstly found in the eastern section of southern Gangdese metallogenic belt. Based on the results of field geological survey, and fluid inclusion measurements including petrography, homogenization temperature analysis, composition of liquid and vapor by laser Raman analysis (LRM) and daughter mineral by X-ray analysis (SEM/EDS), the characteristics, the evolution of ore-formin... |
| Keywords: | Fluid inclusion Ore-forming fluid Mineralization mechanism Nongruri gold deposit Tibet |
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