红外显微镜红外光强度对测定不透明矿物中流体包裹体盐度的影响:以辉锑矿为例  

A Study on the Influence of Infrared Light Source Intensity on Salinity of Fluid Inclusion in Opaque Mineral by Using Infrared Microthermometry: In the Case of Stibnite

作　　者：格西[1,2] 苏文超[1] 朱路艳[1,2] 武丽艳[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学国家重点实验室,贵州贵阳550002 [2]中国科学院研究生院,北京100039

出　　处：《矿物学报》2011年第3期366-371,共6页Acta Mineralogica Sinica

基　　金：国家自然科学基金(批准号:40972072);贵州省科学技术基金项目(2236)

摘　　要：红外显微镜是研究不透明矿物中流体包裹体的重要手段,但红外光发热可能对不透明矿物中流体包裹体的盐度和均一温度测定有影响。本文以辉锑矿中流体包裹体为例,系统评价了红外光强度对测定辉锑矿中流体包裹体冰点的影响。结果表明,红外光强度对辉锑矿中流体包裹体的冰点测定有显著影响,导致过高估计流体包裹体的盐度,并提出了解决这一问题的方法。Infrared microthermometry is useful for determining salinity and homogenization temperature of fluid inclu- sions in opaque minerals. Previous study showed that temperature of phase changes of fluid inclusion in opaque min- erals varied with the infrared light source intensity, resulting in an overestimate of fluid salinities and an underesti- mate of homogenization temperatures. In this study, we evaluated the influence of infrared light source intensity on salinity of fluid inclusions in stibnite. The results reveal that the infrared light source intensity affects notably salini- ties of fluid inclusions in stibnite, resulting in an overestimate of fluid salinities.

关 键 词：辉锑矿 流体包裹体盐度 红外光强度 红外显微镜 

分 类 号：P578.2[天文地球—矿物学] P579[天文地球—地质学]