不同类型祖母绿的宝石学特征及红外光谱研究

Study on Gemological Characteristics and IR Spectrum of Different Types of Emerald

采用常规宝石学研究方法和红外光谱技术对助熔剂法合成祖母绿、哥伦比亚祖母绿、巴西祖母绿和水热法合成祖母绿样品进行了研究。结果表明,不同成因类型的祖母绿红外吸收光谱具有明显的区别,根据祖母绿中是否含水以及水的赋存状态以及氯的吸收峰,可为准确鉴别祖母绿的成因提供重要依据。

The general gemological study methods and IR absorption spectrum techniques were used to study flux-grown synthetic emerald,emeralds from Colombia and Brazil,and hydrothermal synthetic emerald.The study shows that characteristics of infrared absorption spectra have obvious difference in different types of emerald.It can provide important information for identifying natural and synthetic emeralds,according to the state of water and chloric ion in emeralds.