甲翠的宝石学和矿物谱学表征研究  

Gemmological, Mineralogical and Spectral Characteristics of the Jiacui Jade

作　　者：芦明媚 刘子琪 唐校 周征宇[1,3,4] 陈仪方 郑浚豪 张灵敏 Lu Mingmei;Liu Ziqi;Tang Xiao;Zhou Zhengyu;Chen Yifang;Zheng Junhao;Zhang Lingmin(State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China;School of Intermedia Art,China Academy of Art,Hangzhou 310000,Zhejiang,China;Shanghai Enginering and Technology Research Center of Gem and Material Technology,Shanghai 200092,China;Laboratory of Gem and Technological Materials,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学海洋地质国家重点实验室,上海200092 [2]中国美术学院跨媒体艺术系,浙江杭州310000 [3]上海宝石及材料工艺工程技术研究中心,上海200092 [4]同济大学宝石及工艺材料实验室,上海200092

出　　处：《激光与光电子学进展》2024年第15期360-367,共8页Laser & Optoelectronics Progress

基　　金：上海市科委项目(15DZ2283200,18DZ2281300)。

摘　　要：针对岫岩玉中的特色品种——甲翠开展了常规宝石学及谱学分析,以揭示其宝石学及矿物学归属。常规宝石学分析表明,甲翠是一种浅绿色与白色斑纹相间分布的岫岩玉,呈蜡状或油脂光泽,不透明至微透明。测得其折射率均为1.56,密度在2.53~2.67 g/cm^(3)范围内。通过镜下观察、红外光谱实验和激光拉曼光谱实验揭示了甲翠主要由叶蛇纹石组成,次要矿物包含透闪石、方解石和白云石等,其中透闪石相对较为普遍。拉曼光谱与电子探针分析显示,甲翠的绿色部分通常为叶蛇纹石,而白色斑纹处或为透闪石,或为白云石及方解石等碳酸盐矿物。考虑到碳酸盐矿物主要以围岩形式附着,不适合参与玉石命名,因此建议将甲翠限定为一种含透闪石的叶蛇纹石质玉。Conventional gemological and spectroscopic analyses are conducted to reveal the gemological and mineralogical affiliation of the speciality of Xiuyan jade,Jiacui.The conventional gemological analysis revealed that Jiacui is a light green and white mottled nephrite with a waxy or oily luster,opaque to slightly transparent.The refractive index of 1.56 and the density in the range of 2.53 to 2.67 g/cm^(3) are measured.Microscopic observation,infrared spectroscopy,and Raman spectroscopy revealed that the Jiacui is composed primarily of antigorite,with secondary minerals such as tremolite,calcite,and dolomite,of which tremolite is relatively common.Raman spectroscopy combined with electron microprobe analysis shows that the green part of the Jiacui is usually antigorite,while the white spots are either tremolite or carbonate minerals such as dolomite and calcite.Considering that carbonate minerals are not suitable to participate in jade nomenclature as long as they are attached in the form of peridotite,it is suggested to limit Jiacui jade to a kind of serpentinized jade containing tremolite.

关 键 词：光谱学 激光拉曼光谱 红外光谱 电子探针 叶蛇纹石 透闪石 甲翠 岫岩玉 

分 类 号：O657[理学—分析化学]