陕西汉中蛇纹石玉的矿物学及光谱学特征研究

Mineralogical and Spectral Studies on the Serpentine Jade in Hanzhong,Shaanxi Province

摘要: 陕西汉中蛇纹石玉质地细腻温润，颜色浓郁均匀，呈独特的黄色至深棕色色调，是蛇纹石质玉石中的优质品种。X射线荧光光谱分析表明，玉石主要化学成分为SiO₂（42.90%~44.62%）和MgO （43.03%~44.10%）。X射线粉晶衍射、拉曼光谱和红外光谱分析显示，该蛇纹石玉的矿物组成为1T型利蛇纹石，玉石裂隙中普遍发育的石棉为正纤蛇纹石。

Abstract: The serpentine jade, produced in Hanzhong, Shaanxi province, has a fine delicate and moist quality. It appears to be a unique yellow to dark brown colour. XRF analysis shows that SiO₂(42.90%~44.62%) and MgO(43.03%~44.10%) are the main chemical composition of the jade. XRD analysis reveals that the mineral composition of the serpentine jade is 1T-lizardite; in jade cracks the commonly developed asbestos is orthochrysotile.