一种含红帘石“草莓晶”的宝石矿物学特征

The Gemological and Mineralogical Characteristic of"Strawberry Quartz"Containing Piemontite

为了丰富对“草莓晶”内包裹体的研究,本文以12颗含有红色粒状和片状包裹体的“草莓晶”样品为研究对象,在常规宝石学测试的基础上,结合电子探针(EMPA)、X射线粉晶衍射(XRD)、红外光谱(IR)、拉曼光谱(Raman)等测试手段,对其常规宝石学性质、化学成分、矿物组成和谱学特征等进行了初步探讨。样品的常规宝石学性质表明其主体部分可能为多晶质的石英集合体,这与XRD、红外光谱和拉曼光谱的结论一致;红色包裹体部位的电子探针和拉曼光谱分析结果均表明其为红帘石,致色元素为Mn;结合电子探针和X射线粉晶衍射的分析,认为白色纤维状包裹体为透闪石。

In order to enrich the research information of inclusions in"strawberry quartz",12 samples with red needle and flake inclusions were studied.According to conventional gemological testing methods,Electron microprobe analysis(EMPA),X-ray diffraction(XRD),Infrared spectrum(IR)and Raman spectrum(Raman),their conventional gemological properties,chemical composition,mineral composition and spectral characteristics were investigated.It can be concluded that these sample are composed of docrystalline quartz,which are deduced by the results of conventional gemological properties,XRD,IR and Raman experiments.The EPMA and Raman results show the red inclusions are piemontite,and their red color is caused by Mn.The results of EMPA and XRD indicate that the white fibrous inclusions is tremolite.