一种粉色斜黝帘石玉的宝石学特征及其颜色成因  

Gemmological Characteristics and Color Genesis of a New Pink Clinozoisite Jade

作　　者：王小航 王轶[1] 赵娟[1] 裴赢[1] WANG Xiaohang;WANG Yi;ZHAO Juan;PEI Ying(Xi'an Geological Survey Center,Xi'an 710054)

机构地区：[1]中国地质调查局西安地质调查中心,西安710054

出　　处：《中国宝玉石》2020年第3期43-49,37,共8页China Gems & Jades

摘　　要：本文针对新发现的斜黝帘石玉进行了常规宝石学测试,利用X射线粉末衍射仪(XRD)、红外光谱仪(FTIR)、电子探针(EPMA)、紫外—可见分光光度计(UV-Vis)以及扫描电镜(SEM)等现代测试方法对样品的矿物组成、结构、化学成分及颜色成因进行了相关研究。主要识别了该玉石红外光谱最强峰位于901~1137cm-1范围内;样品在545nm与450nm处具有宽大的吸收峰;扫描电镜揭示了其具有柱状显晶质结构,质地细腻;EPMA与XRD同样揭示了其主要矿物为斜黝帘石和黝帘石;探讨了其粉红色的成因。以上研究结果为快速、方便地鉴定此种玉石提供了参考依据。In order to determine the mineral composition, phase structure, chemical component and color origin of a newly discovered pink jade, X-Ray diffractometer(XRD), fourier transform infrared spectrometer(FTIR), electron microprobe(EPMA), ultraviolet-visible spectrophotometer(UV-Vis) and scanning electron microscope(SEM) are used to investigate the samples of this jade. The FTIR shows that the strongest infrared absorption bands appear in the range of 901~1137 cm-1. In the UV-Vis results, the broad absorption peaks are displayed at 545 nm and 450 nm. It is revealed on SEM that this jade has a fine columnar phanerocrystalline texture. For EPMA and XRD, the outcome indicates that the main compositions are clinozoisite and zoisite. And the genesis for its pink color is discussed. All these results provide valuable references for a rapid and accurate identificat-ion of this type of jade.

关 键 词：斜黝帘石 黝帘石 粉色矿物 颜色成因 

分 类 号：P594[天文地球—地球化学]