摘要
近期在广东市场出现了一种蓝色的、外观似针钠钙石的玉石,为查明其矿物组成及颜色成因,采用常规的宝石学测试,结合激光拉曼光谱仪、红外吸收光谱仪、紫外-可见分光光度计、X射线荧光光谱仪等大型仪器,对该玉石样品的宝石学特征做了一系列的研究。研究结果表明:样品的折射率为1.52~1.66(点测),相对密度约为2.69;拉曼光谱显示样品主要成分为文石;红外光谱的分析结果进一步验证了该样品为无机成因的文石;紫外-可见分光光度计和X射线荧光光谱仪的分析结果推断,该样品的蓝色是由Cu^(2+)以类质同象的方式替换了Ca^(2+)所致。
Currently, a kind of blue jade appears in Guangdong market, which likes pectolite. The gemmological characteristics of this jade are researched by using conventional gemmo-logical testing methods and Raman spectroscopy, FTIR, UV-Vis absorption spectrometer, X-ray fluorescence spectrometer. The results showed that the RI of the sample is 1. 52 - 1. 66 （point measurement）, and relative density is 2. 69. Raman spectrum showed that the main mineral component of the sample is aragonite, and FTIR analysis results further valida-ted that the sample is inorganic aragonite. The results of UV-Vis absorption spectrometer and X-ray fluorescence spectrometer showed that the colour of the aragonite sample is caused by Cu2＋ , which replaces Ca2＋ in mineral.
出处
《宝石和宝石学杂志》
CAS
2017年第4期31-35,共5页
Journal of Gems & Gemmology
作者简介
佘丹（1989-）,女,CGC,宝石及材料工艺学专业,主要从事珠宝鉴定工作.
