| 西藏甲玛铜多金属矿含矿斑岩石英斑晶单个熔融包裹体的成分研究 |
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| 引用本文： | 周云,汪雄武,唐菊兴,秦志鹏,彭惠娟,李爱国,杨科,王华,李炯,张继超.西藏甲玛铜多金属矿含矿斑岩石英斑晶单个熔融包裹体的成分研究[J].成都理工大学学报(自然科学版),2011,38(1):92-102. |
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| 作者姓名： | 周云 汪雄武 唐菊兴 秦志鹏 彭惠娟 李爱国 杨科 王华 李炯 张继超 |
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| 作者单位： | 周云,汪雄武,秦志鹏,彭惠娟,ZHOU Yun,WANG Xiong-wu,QIN Zhi-peng,PENG Hui-uan(成都理工大学地球科学学院,成都,610059);唐菊兴,TANG Ju-xing(中国地质科学院矿产资源研究所,北京,100037);李爱国,杨科,王华,李炯,张继超,LI Ai-guo,YANG Ke,WANG Hua,LI Jiong,ZHANG Ji-chao(上海应用物理研究所,上海,201204) |
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| 基金项目： | 科技部行业专项协作项目，地保工程项目，青藏专项，西藏华秦龙矿业开发有限公司勘探项目，技术开发项目，教育部岩石学矿床学国家重.(培育)学科建设基金资助项目 |
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| 摘 要： | 研究甲玛铜多金属矿床岩浆结晶演化特点、岩浆热液过渡与矿化的关系。利用Linkam TS1500热台对甲玛矿床含矿斑岩石英斑晶中的熔融包裹体进行鉴定、均一温度测定,采用电子探针与同步辐射X射线荧光微探针对石英斑晶中的熔融包裹体进行常量元素及微量元素的测定,结果表明,含矿斑岩体形成温度为630~880℃。Na、Ca等元素易富集于岩浆挥发组分中,挥发组分饱和出溶形成高温、高盐度流体,成矿元素从最早的岩浆结晶分异阶段开始,强烈地选择性进入挥发性气相中进行迁移,出溶的挥发组分中具有成矿元素的初步富集。矿床在成因上与斑岩-夕卡岩成矿系统中的岩浆-热液成矿作用密切相关。
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| 关 键 词： | 熔融包裹体 石英斑晶 均一温度 挥发组分 甲玛 西藏 |
Composition of single melt inclusion in quartz phenocryst in the Jiama Cu-polymetallic Deposit,Tibet |
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| ZHOU Yun,WANG Xiong-wu,TANG Ju-xing,QIN Zhi-peng,PENG Hui-juan,LI Ai-guo,YANG Ke,WANG Hua,LI Jiong,ZHANG Ji-chao .This Pape Studies College of Earth Sciences,Chengdu University of Technology,Chengdu ,China.Composition of single melt inclusion in quartz phenocryst in the Jiama Cu-polymetallic Deposit,Tibet[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2011,38(1):92-102. |
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| Authors: | ZHOU Yun WANG Xiong-wu TANG Ju-xing QIN Zhi-peng PENG Hui-juan LI Ai-guo YANG Ke WANG Hua LI Jiong ZHANG Ji-chao This Pape Studies College of Earth Sciences Chengdu University of Technology Chengdu China |
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| Institution: | ZHOU Yun1,WANG Xiong-wu1,TANG Ju-xing2,QIN Zhi-peng2,PENG Hui-juan2,LI Ai-guo3,YANG Ke3,WANG Hua3,LI Jiong3,ZHANG Ji-chao3 1.This Pape Studies College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China,2.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,3.Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204 |
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| Abstract: | the relation of magmatic crystallization,evolution and hydrothermal transition to mineralization.Linkman TS1500 heating stage is used to characterize the melt inclusions in the quartz phenocryst of the ore-bearing porphyry in the Jiama Cu-polymetallic deposit and to measure their homogenization temperatures,while EMPA and SRXRF micro-probe are used to measure the major and trace elements of the melt inclusions.The formation temperature of the ore-bearing porphyry is 630~880℃.Na and Ca tend to be rich in magmatic volatile,and the volatile develops into hyperthermal and hypersaline fluids as it becomes saturated and exsolutioned.The metallogenic elements selectively force into the gas-phase of volatile from the earliest crystallization stage,and the metallogenic elements are preliminarily enriched in the exsolutioned volatile.A conclusion is arrived that the genesis of the deposit is closely related to magmatic hydrothermal mineralization in the porphyry-skarn system. |
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| Keywords: | melt inclusion quartz phenocryst homogenization temperature volatile Jiama Tibet |
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