摘要
云南麻栗坡祖母绿矿床赋存于老君山变质核杂岩中,是我国目前发现最具经济价值的祖母绿矿床。为研究该矿床所产祖母绿的矿物学特征,运用电子探针、红外光谱及拉曼光谱技术,分析其矿物化学成分及光谱学特征。结果表明,云南麻栗坡祖母绿的主要成分为SiO2、Al2O3和BeO,V2O5的含量较高,Cr2O3、K2O和Na2O含量均较低;红外光谱主要吸收峰位于1167、1050、991、844、773、710、614、567、504、480cm-1附近,与澳大利亚孟席斯祖母绿的红外光谱特征基本一致,但与赞比亚及新疆祖母绿差异较大;4个产地祖母绿的拉曼谱峰总体趋势较为一致,均表现出绿柱石的拉曼光谱特征,但它们也存在诸多不同,可能是成矿环境差异的宏观表现,可作为产地的鉴别依据。
Malipo emerald deposit occurs in Laojunshan metamorphic core complex.It is the most eco⁃nomically valuable emerald deposit in China.In order to study the mineralogical characteristics of emeralds produced in this deposit,electron probe,infrared spectrum and Raman spectrum were used to analyze the mineral chemical composition and spectral characteristics.The results show that the main components of Malipo emerald are SiO2,Al2O3 and BeO.The results showed that the main components of emeralds from Malipo were SiO2,Al2O3 and BeO,and the contents of V2O5 were high,while the contents of Cr2O3,K2O and Na2O were low.The main absorption peaks of infrared spectrum are located at 1167,1050,991,844,773,710,614,567,504,and 480 cm-1.Their infrared spectral characteristics are basically consistent with Austra⁃lian Menzies emeralds,but they are different from Zambian and Xinjiang.The Raman spectrum peaks of em⁃eralds from the four localities have the same general trend,and show the Raman spectrum characteristics of beryl.However,there are many differences between them,which may be the macroscopic manifestation of metallogenic environment differences,and can be used as the basis for identification of origin.
作者
赵栩锐
沙鑫
尹悦
赵红英
张闪硕
谢爱香
ZHAO Xurui;SHA Xin;YIN Yue;ZHAO Hongying;ZHANG Shanshuo;XIE Aixiang(School of Earth Sciences,Guilin University of Technology;Jewelry Testing Center,Guilin Universi-ty of Technology;Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration)
出处
《现代矿业》
CAS
2023年第3期149-153,共5页
Modern Mining
基金
广西科技计划项目(编号:桂科AD19110048)
广西自然科学基金项目(编号:2022GXNSFBA035595)
桂林理工大学科研启动基金项目(编号:GUTQDJJ2017101)。
