云南麻栗坡祖母绿的宝石学及光谱特征  

Gemological and spectral characteristics of emerald from Malipo County in Yunnan

作　　者：王莉 WANG Li(School of Gemmology,West Yunnan University of Applied Science,Tengchong 679100,China)

机构地区：[1]滇西应用技术大学珠宝学院,云南腾冲679100

出　　处：《超硬材料工程》2023年第4期54-59,共6页Superhard Material Engineering

基　　金：滇西应用技术大学珠宝学院院级项目(2021YZBXY008)。

摘　　要：通过对云南麻栗坡的3颗伟晶岩型和2颗云英岩型祖母绿的宝石学特征和谱学特征进行常规宝石学特征、紫外-可见光谱、红外吸收光谱和拉曼光谱的测试和分析。得出云南麻栗坡祖母绿的紫外吸收峰在437 nm、636 nm、660 nm和683 nm附近,主要致色离子是V^(3+);红外光谱的“指纹峰”吸收具有向高频方向偏移的特征;拉曼光谱有300~400 cm^(-1)、681~687 cm^(-1)、1000~1100 cm^(-1)的吸收特征,且在垂直晶体c轴方向的681~687 cm^(-1)的吸收强度最大。The general gemological characteristics,ultraviolet-visible spectrum,infrared absorption spectrum,Raman spectrum of 3 pegmatite emeralds and 2 greisen emeralds from Malipo County,Yunnan Province are studied.It is shown that the UV absorption peaks of the emerald from Malipo are around 437 nm,636 nm and 683nm,and the main chromic ion is V^(3+).The“fingerprint peak”absorption of infrared spectrum has the characteristics of shifting towards high frequency.The Raman spectra show the absorption characteristics of 300~400 cm^(-1),681~687 cm^(-1) and 1000~1100 cm^(-1),and the absorption strength,ranging from 681 to 687 cm^(-1),is the highest in the direction perpendicular to the c-axis of the crystal.

关 键 词：祖母绿 宝石学 谱学特征 云南麻栗坡 

分 类 号：TS933[轻工技术与工程]