湖北十堰“雨点纹”绿松石的谱学特征研究  

Spectroscopic Characteristics of Turquoise with"Raindrop Pattern"from Shiyan,Hubei Province

作　　者：赵红星 陈叶雅慧 刘迎新[1] ZHAO Hongxing;CHEN YE Yahui;LIU Yingxin(School of Gemmology,China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]中国地质大学(北京)珠宝学院,北京100083

出　　处：《中国宝玉石》2023年第4期10-17,33,共9页China Gems & Jades

摘　　要：“雨点纹”是绿松石中具有类似雨滴状饱和颜色的特征图案。本文以产自湖北省十堰市的“雨点纹”绿松石为样品,利用常规宝石学测试、X射线粉晶衍射、拉曼光谱和红外光谱、电子探针等方法对样品的宝石学性质、物相组成和化学成分等方面进行分析探讨。实验结果显示,“雨点纹”绿松石样品整体为蓝绿色调,雨滴状图案无规律分布其中。本文研究的“雨点纹”绿松石与标准绿松石谱学特征相近,EMPA结果表明Cu和Fe元素为绿松石的主要致色元素。基底和“雨点纹”部分的主要矿物均为绿松石。"Raindrop pattern"are patterns with raindrop-like saturated color features in turquoise.In this paper,the"raindrop-pattern"turquoise produced in Hubei Province was used as a sample,the gemological properties,phase composition and chemical composition of the samples were analyzed by conventional gemological tests,X-ray diffraction(XRD),Raman spectrum,infrared spectrum(IR)and electron microprobe(EMPA).The results showed that the overall turquoise samples were blue-green tones,and"raindrop pattern"of samples are dispersed irregularly.The"raindrop-pattern"turquoise studied in this paper has similar spectral characteristics to standard turquoise.EMPA results indicate Cu and Fe elements are the main chromogenic elements of turquoise.All evidences prove that the main minerals in the substrate and"raindrop pattern"are both turquoise.

关 键 词：湖北十堰 绿松石 雨点纹 宝石学特征 化学成分 谱学特征 

分 类 号：P578.92[天文地球—矿物学]