新疆绿柱石(祖母绿)包裹体矿物学及成矿地质条件研究  

Mineralogy and Ore-forming Geological Conditions of Beryl (Emerald) Inclusions from SouthArea of Xinjiang Autonomous Region, China

作　　者：李健[1] 王龙江[1] 汪立今[1] 张春疆 石玉君 陈勇 李甲平 

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830047 [2]地质矿产勘查开发局第二地质大队,新疆喀什844000

出　　处：《矿物学报》2012年第4期563-568,共6页Acta Mineralogica Sinica

基　　金：新疆维吾尔自治区自然科学基金项目(2011211A018);国家自然科学基金项目(批准号:40862004)

摘　　要：新疆发现优质绿柱石(祖母绿)受到了国内外学者的高度关注。本文主要对新疆绿柱石(祖母绿)矿的包裹体矿物学及成矿地质条件进行研究,发现流体包裹体主要有2种类型:A型,两相盐水溶液包裹体;B型,三相盐水包裹体(含子矿物)。流体包裹体均一温度变化范围为:270～500℃,主要集中在300～480℃,最高峰值为500℃,属中高温度流体。流体包裹体盐度变化范围为:18%～60%,主要集中在20%～50%,最高峰值为60%,属中高盐度流体。成矿流体密度为0.95 g/cm3。成矿流体的压力约为65 MPa,确定新疆绿柱石矿床类型为中高温气成-热液型。High grade beryl （emerald） discovered in the south area of Xinjiang Autonomous Region has attracted attention by domestic and foreign scholars. This paper is mainly focused on the inclusions mineralogy and ore-forming geological conditions of the beryl （emerald） ore. It＇s discovered that the fluid inclusions have two main types, Type A, two phase brine inclusions, and Type B, three-phase brine inclusions （including the son mineral）. The homogenization temperature of fluid inclusions ranges from 270 to 500 ℃, and is mainly between 300 and 480 ℃, belonging to the high temperature fluid. The salinity of fluid inclusions ranges from 18% to 60%, and is mainly between 20% and 50%, belonging to the high-salinity fluid. Ore-forming fluid density is 0.95 g/cm3. The pressure of ore-forming fluid is about 65 MPa. We can determine that the type of beryl deposits in Xinjiang is the high temperature gas-hydrothermal type, and the beryl （emerald） in this area has important guiding significance for theoretical and practical application.

关 键 词：绿柱石 祖母绿 包裹体矿物学 成矿地质条件 

分 类 号：P571[天文地球—矿物学] P578.969[天文地球—地质学]