安徽双河含柯石英硬玉石英岩中流体包裹体的研究

在安徽双河含柯石英石玉石英岩中已识别出５类流体懈裹体，其中早期退变质阶段捕获的包裹体是均一温度低、含盐度较高的水溶包裹体，晚期捕获提均一温度较高、含盐底低的水溶流体包裹体，更晚期的是三相富含ＣＯ２包裹体及均一温度高的气－液两相富Ｃ炮裹体，为限定硬玉石英岩的隆升轨迹提供重要依据，在单相气体包裹体和三相富含Ｃ炮裹体中的气相成分为ＣＯ２和Ｎ２，氮可能来自外部或玉石英岩的原岩。

FLUID INCLUSIONS IN COESITE BEARING JADEITE QUARTZITE FROM SHUANGHE, ANHUI PROVINCE

Five types of fluid inclusions hosted by quartz have been recognized in coesite-bearing jadeite quartzite from Shuanghe, Anhui Province. Two phase H 2O inclusions of low homogenization temperature ( t h) and higher salinity were trapped in the early retrograde metamorphic stage and followed by those of higher t h and lower salinity. Three phase H 2O-CO 2 inclusions were trapped afterwards, and then the latest, two phase CO 2 inclusions of high homogenization. These form an important basis for the construction of uplift path for jadeite quartzite. CO 2 and N 2 are the gaseous components in the three phase H 2O-CO 2 inclusions and monophase vapour inclusions.