摘要
湖北铜绿山铜铁(金)矿床是长江中下游地区典型的矽卡岩型矿床。为了探究其矽卡岩的成因,进行了包裹体的岩相学观察,显微测温和激光拉曼分析。研究结果表明,铜绿山矿床流体包裹体的均一温度为180~700℃,盐度w(NaCleqv)为1.74%~55.7%;从矽卡岩期到石英—硫化物期,成矿流体从高温、高盐度向低温、低盐度演化;激光拉曼显示熔融包裹体中包含石榴石、方解石、赤铁矿和水。综合包裹体的岩相学及相组成特征,铜绿山矿床的早期矽卡岩应为岩浆成因。
The Tonglüshan copper-iron(gold)deposit is a typical skarn deposit in the middle and lower reaches of the Yangtze River in Hubei.In order to find the origin of skarn,the petrographic observation,microscopic temperature measurement and laser Raman analysis of the inclusions were carried out.The result shows that the uniform temperature of the fluid inclusions in the deposit ranges from 180 to 700℃,and the salinity ranges from 1.74%to 55.7%NaCleqv.From the skarn period to the quartz-sulfide period,the ore-forming fluids are from high temperature and high salinity to low temperature and low salinity.The result of laser Raman measurement shows that the melt inclusions contain garnet,calcite,hematite and water.Based on the petrography and petrofacies composition characteristics of inclusions,the early skarn of Tonglüshan deposit should be of magmatic origin.
作者
赵岩岩
谭俊
刘晓阳
张铭
陈杨
何迪
Zhao Yanyan;Tan Jun;Liu Xiaoyang;Zhang Ming;Chen Yang;He Di(Faculty of Earth Resources,China University of Geosciences(Wuhan),Wuhan 430074,China)
出处
《地质科技通报》
CAS
CSCD
北大核心
2020年第6期64-74,共11页
Bulletin of Geological Science and Technology
基金
中央高校基本科研业务费专项资金资助项目(CUGCJ1708)。
