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| 安徽铜陵冬瓜山铜矿床成矿流体特征及演化 | |
| 引用本文： | 邱士东,谢玉玲,徐九华,王葆华,杨竹森,蒙义峰.安徽铜陵冬瓜山铜矿床成矿流体特征及演化[J].矿床地质,2007,26(2):204-212. |
| 作者姓名： | 邱士东 谢玉玲 徐九华 王葆华 杨竹森 蒙义峰 |
| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083 2. 桂林工学院资源与环境工程系,广西,桂林,541004 3. 中国地质科学院矿产资源研究所,北京,100037 |
| 基金项目： | 国家自然科学基金;国家自然科学基金 |
| 摘 要： | 对安徽铜陵冬瓜山矿床内矽卡岩矿物、石英、方解石中的流体包裹体进行了岩相学和显微测温分析、群体包裹体气液相成分分析、单个包裹体气液相成分激光拉曼探针分析,探讨了成矿流体的特征及演化。研究表明,该矿床与燕山期岩浆热液有关的成矿流体,从早期矽卡岩阶段,经中期石英硫化物阶段,至晚期石英方解石阶段,是从高温、高盐度、富钾流体演化至中高温、中高盐度、富CO2(CH4)流体再至中低温、低盐度流体。成矿流体中的主要挥发分为H2O、CO2、CH4,并含少量C2H6、H2S、N2等,液相成分中的阳离子以Na 、K 为主,有少量Ca2 、Mg2 等,阴离子除Cl-外,SO42-的含量也较高。 |
| 关 键 词： | 地球化学 流体包裹体 富钾流体 富CO2(CH4)流体 冬瓜山铜矿床 安徽 |
| 文章编号： | 0258-7106（2007）06-0204-09 |
| 修稿时间： | 2006-03-292006-12-15 |
Characteristics and evolution of ore-forming fluids associated with Yanshanian magmatic activity in Dongguashan copper deposit, Anhui Province, China |
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| QIU ShiDong,XIE YuLing,XU JiuHua,WANG BaoHua,YANG ZhuSen,MENG YiFeng.Characteristics and evolution of ore-forming fluids associated with Yanshanian magmatic activity in Dongguashan copper deposit, Anhui Province, China[J].Mineral Deposits,2007,26(2):204-212. | |
| Authors: | QIU ShiDong XIE YuLing XU JiuHua WANG BaoHua YANG ZhuSen MENG YiFeng |
| Institution: | 1 Civil and Environmental Engineering School, Beijing University of Science and Technology, Beijing 100083, China; 2 Department of Resources and Environmental Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China ; 3 Institute of Mineral Resources, CAGS, Beijing 100037, China |
| Abstract: | Based on petrography,microthermometry and LRM analysis of fluid inclusions in garnet,diopside,quartz and calcite,this paper has discussed characteristics and evolution of ore-forming fluids in the Dongguashan copper deposit.The ore-forming fluids of Yanshanian magmatism evolved from high temperature,high salinity and K-rich fluids via moderate-high temperature and CO2(CH4)rich fluids to moderate-low temperature and low salinity fluids.The analytical results suggest that the dominant volatiles in the ore-forming fluids are H2O,CO2 and CH4,with minor C2H6,H2S,N2 etc.Na ,K as well as Ca2 ,Mg2 are dominant cations whereas Cl-and SO42-are major anions.High K and CO2(CH4)constitute the main feature of the ore-forming fluids related to Yanshanian magmatism. |
| Keywords: | geochemistry fluid inclusion potassic-rich fluid CO2(CH4)-rich fluid Dongguashan copper deposit Auhui Province |
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