广东梅子冲铅锌钨多金属矿床流体包裹体特征及成矿作用
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  • 英文篇名:Characteristics of Fluid Inclusions and Metallogenesis of the Meizichong Pb-Zn-W Polymetallic Deposit in Guangdong Province
  • 作者:唐一昂 ; 赖健清 ; 杨牧 ; 梅嘉靖 ; 吴剑 ; 谌后成 ; 郭兰萱
  • 英文作者:TANG Yi-ang;LAI Jian-qing;Yang Mu;MEI Jia-jing;WU Jian;CHEN Hou-cheng;GUO Lan-xuan;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring,Ministry of Education;School of Geosciences and Info-Physics,Central South University;Geological Corporation of China Gold Group;Nonferrous Metals Geological Bureau of Guangdong Province 932 Battalion;Guangdong Nonferrous Metals Geological Exploration Institution;
  • 关键词:流体包裹体 ; 成矿作用 ; 矽卡岩 ; 成矿流体 ; 梅子冲铅锌钨多金属矿 ; 广东
  • 英文关键词:fluid inclusions;;metallogenesis;;skarn;;ore-forming fluid;;Meizichong Pb-Zn-W polymetallic deposit;;Guangdong Province
  • 中文刊名:DZKT
  • 英文刊名:Geology and Exploration
  • 机构:中南大学有色金属成矿预测与地质环境监测教育部重点实验室地球科学与信息物理学院;中国黄金集团地质有限公司;广东省有色金属地质局九三二队;广东省有色地质勘查院;
  • 出版日期:2017-03-15
  • 出版单位:地质与勘探
  • 年:2017
  • 期:v.53;No.470
  • 基金:中国地质调查局“整装勘查关键基础地质研究”计划项目(编号:12120114052701);; 中南大学“创新驱动项目”(编号2015CX008)资助
  • 语种:中文;
  • 页:DZKT201702002
  • 页数:10
  • CN:02
  • ISSN:11-2043/P
  • 分类号:13-22
摘要
梅子冲铅锌钨多金属矿床位于广东省韶关市一六矿区。野外调查和室内显微镜鉴定表明,梅子冲矿床成矿作用分为两期五阶段,第一期为矽卡岩期,可以分为早期矽卡岩阶段(A1)、晚期矽卡岩阶段(A2)和钾长石白钨矿阶段(A3);第二期为热液期,可以分为石英硫化物阶段(B1)和石英碳酸盐阶段(B2)。矿体的石英和白钨矿中含有富液相的气液两相流体包裹体,地质特征结合包裹体测温资料表明,成矿温度介于207℃~449℃,盐度为1.16%~12.4%,反映矿床形成于中-高温环境。成矿流体特征及成矿温度的演化表明,A1+A2至A3阶段的流体混合作用可能导致了白钨矿的形成,A3至B1阶段的流体混合作用可能促进了铅锌矿的形成。
        The Meizichong Pb-Zn-W polymetallic deposit is located in the Yiliu mining area,Shaoguan,Guangdong Province.Field geological investigations and microscope characteristics suggest that the mineralization of this deposit can be divided into 2 episodes,namely skarn episode(A)and hydrothermal episode(B).The former can be subdivided into early skarn stage(A1),late skarn stage(A2)and K-feldspar-tungsten stage(A3),while the latter is subdivided into quartz-sulfide stage(B1)and quartz-carbonate stage(B2).Liquid-rich inclusions were observed in quartz and tungsten from ores.Geological characteristics and micro-thermometric data show that ore-forming temperatures range from 207℃to 449℃,while salinities range from 1.16%to 12.4%,indicating that the deposit was formed in a medium-high temperature environment.The fluid mixing from A1+A2 stage to A3stage might lead to the W precipitation and the fluid mixing from A3 stage to B1 stage might result in the Pb-Zn precipitation.
引文
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