【作者】 欧阳秋眉；

【Author】 C.M.OUYANG;

【机构】 香港珠宝学院；

【摘要】 近二十年多来市场上出现了三种黑色翡翠,即乌鸡种硬玉质、墨翠绿辉石质翡翠和钠铬辉石质翡翠。多年来,作者对这三种不同黑色翡翠做了系统研究包括化学分析,矿物成分,薄片观察,X-光分析,红外线光谱分析等。本文主要讨论这三种黑色翡翠的宝石学特征及其可能的归属。更多还原

【Abstract】 Three types of black jadeite are appeared in the market.The chemical compositions,mineralogy,petrology(mainly thin section observation),structure analysis,and spectroscopic features have been systematic investigated.It was found that their gemological properties vary depending on the type,which results from different compositions of the mother-rocks.The detailed gemological characteristics and the possible geological formation conditions of the three types of black jadeite are compared and discussed.更多还原