单个流体包裹体LA-ICP-MS成分分析及在矿床学中的应用  

An analysis of the individual fluid inclusion by LA-ICP-MS and its application to ore deposits

作　　者：李晓春[1] 范宏瑞[1] 胡芳芳[1] 杨奎锋[1] 

机构地区：[1]中国科学院地质与地球物理研究所矿产资源研究重点实验室,北京100029

出　　处：《矿床地质》2010年第6期1017-1028,共12页Mineral Deposits

基　　金：国家自然科学基金项目(40625010和40702016);国家重点基础研究发展规划项目(2006CB403503)资助

摘　　要：流体对于热液矿床成矿过程起着十分重要的作用,而古成矿流体最直接的代表是流体包裹体,流体包裹体研究是了解与成矿有关的一系列问题的重要钥匙。单个流体包裹体成分LA-ICP-MS分析是了解成矿流体成分特征的最重要手段之一。文章简要介绍了单个流体包裹体成分LA-ICP-MS分析技术及待测样品选取等方面的问题,重点归纳了流体包裹体成分LA-ICP-MS分析在矿床学中的主要应用,如成矿流体的特征、成矿流体的来源、成矿流体演化历程、诱发金属沉淀的原因、岩浆-热液矿床中金属的来源、元素在不同相中的分配、模拟计算。最后为LA-ICP-MS对单个流体包裹体成分测试的前景做了简单的展望。Fluids,which play a significant role in the hydrothermal ore-forming system,are directly represented by fluid inclusions trapped during mineral growth.Fluid inclusions supply key source information on the ore-forming process,and LA-ICP-MS is a powerful tool for quantitative measurement of multi-element concentrations in the individual fluid inclusion.This paper briefly describes the process,characteristics and strategies of this analytical technique as well as some criteria for selection of fluid inclusions suitable for LA-ICP-MS analysis.The application of this technique to ore deposit is also discussed in such aspects as the properties of ore-forming fluids,the origin of ore-forming fluids,the evolution process of ore-forming fluids,the factors inducing ore metals precipitation,the genesis of ore metals,the partitioning of different elements during different phase separation processes,and the supply of data for ore-forming process simulation.A short outlook is given concerning the potential future of individual fluid inclusion analysis by LA-ICP-MS.

关 键 词：地球化学 LA-ICP-MS 单个流体包裹体 矿床学 应用 

分 类 号：P599[天文地球—地球化学]