津巴布韦祖母绿的研究现状  

Research status of emerald in Zimbabwe

作　　者：王雅祺 WANG Ya-qi(Gemmological Insitute China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]中国地质大学(武汉)珠宝学院,湖北武汉430074

出　　处：《超硬材料工程》2020年第1期47-52,共6页Superhard Material Engineering

摘　　要：祖母绿是世界上最珍贵的宝石之一,分布在哥伦比亚、赞比亚、巴西、巴基斯坦、阿富汗、俄罗斯、马达加斯加和津巴布韦等国。而津巴布韦山达瓦那祖母绿具有相对恒定的物理性质,折射率高,比重大。它们的特征是板状、纤维状角闪石,既有阳起石,也有立方闪石。其他常见包裹体为钠长石和磷灰石。与其他地方的大多数翡翠相比,流体包裹体罕见。山达瓦那祖母绿中铬、钠、镁、锂和铯的含量非常高。通过使用传统的宝石测试技术,结合物理性质、包裹体和化学成分,可以很容易地将它们与其他地方的大多数祖母绿区分开。Emerald is one of the most precious gemstones in the world and distributed in Colombia,Zambia,Brazil,Pakistan,Afghanistan,Russia,Madagascar,and Zimbabwe.Furthermore the emeralds from Sandawana in Zimbabwe have relatively constant physical properties,high refractive index,and large density.They are characterized by tabular and fibrous amphiboles,actinolite and cubic amphibole.Other inclusions are albite and apatite.Compared with the most jadeite from the other other places,the fluid inclusions are more rarely observed.The contents of chromium,sodium,magnesium,lithium and cesium in Sandalwana emerald are all very high.By traditional gem testing techniques,they can be easily distinguished from the other most emeralds in other places with physical properties,inclusions and chemical composition.

关 键 词：津巴布韦 祖母绿 山达瓦那 宝石学特征 

分 类 号：TS933[轻工技术与工程]