缅甸曼辛尖晶石中的橙黄色包裹体研究  

Orange-Yellow Inclusion in Spinel from Man Sin, Myanmar

作　　者：翟少华 裴景成[1] 黄伟志 ZHAI Shaohua;PEI Jingcheng;HUANG Weizhi(Gemmological Institute,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质大学珠宝学院

出　　处：《宝石和宝石学杂志》2019年第6期24-30,共7页Journal of Gems & Gemmology

基　　金：国家重点研发计划项目(2018YFF0215403);中国地质大学(武汉)珠宝检测技术创新中心开放基金(CIGTXM-S201618,文章编号GICTWZ-2019016)

摘　　要：缅甸曼辛(Man Sin)是近年来市场最为热门的尖晶石产地,以产出“绝地武士”尖晶石而闻名。采用宝石显微镜、激光拉曼光谱仪,对缅甸曼辛尖晶石样品的内部包裹体的类型和成分进行了研究分析。研究表明,缅甸曼辛(Man Sin)尖晶石中常含有带有橙黄色流体的多相包裹体,具有产地指示意义。橙黄色流体包裹体可以被捕获包裹在八面体负晶之中,可以附着在矿物包裹体的表面,可以与气态的H 2 S,液态的H 2 S以及各种矿物包裹体组成特征的多相包裹体,其拉曼光谱以155、220、443 cm-1和475 cm-1拉曼峰为特征,为高浓度的自然硫溶液,液体可能为CS 2。富含自然硫的流体以多种形式存在于尖晶石内部包裹体中,表明缅甸曼辛尖晶石形成于高度还原的环境中。Providing the famous“Jedi”spinel,Man Sin(Myanmar)has gained more and more attention in these years.Gem microscope and Raman spectrometer were used to carefully test inclusions in spinels.The multi-phase inclusion containing orange-yellow fluid could help distinguish Man Sin spinels from the spinels of other localities.The orange-yellow fluid was found in octahedral negative crystals and on the surface of mineral inclusions,which could form the indicating multi-phase inclusions with H 2 S(gaseous and liquid)and a variety of minerals.The Raman spectrum of the orange-yellow fluid shows four bands at 155,220,443,475 cm-1 which indicate that it is high-level natural sulphur solution and the liquid is probably CS 2.Sulphur indicates highly reducing conditions during the formation of spinels from Man Sin,Myanmar.

关 键 词：尖晶石 橙黄色包裹体 拉曼光谱 缅甸曼辛 

分 类 号：TS93[轻工技术与工程]