三种浙江青田石的宝石矿物学特征研究

Study on Gemmological and Mineralogical Characteristics of Three Kinds of Qingtian Stone from Zhejiang Province

摘要: 采用显微分析、电子探针、X射线粉末衍射实验、红外光谱等测试方法,对“山炮绿”种、“蓝花钉”种、“夹板冻”种青田石样品进行了研究。结果表明,“山炮绿”种样品的主要矿物为白云母,次要矿物为石英;“蓝花钉”种样品主要由叶腊石和刚玉组成;“夹板冻”种样品的主要矿物为白云母,还含有石英、钠长石、钠云母和少量的赤铁矿。同时,还对其颜色成因进行了探讨。

Abstract: Shanpaolv "Lanhuading" "Jiabandong" samples, which are the typical varieties of Qingtian stone, are studied by using the microscopic analysis, electron microprobe analysis, X-ray powder diffraction analysis and IR spectroscopy.The results show that the major mineral component of "Shanpaolv" sample is muscovite and the secondary mineral component is quartz. "Lanhuading" sample is mainly composed of pyrophyllite and corundum.The major mineral component of "Jiabandong" sample is muscovite and it also contains quartz, albite, paragonite and a small amount of hematite.Moreover, the colour genesis of Qingtian stone is studied in this paper.