“佘太翠”玉的振动光谱表征

Study on the Vibrational Spectra Characterization of the“She tai cui”Jade

"佘太翠"玉是一种新兴的玉石,因产于内蒙古巴彦淖尔市乌拉特前旗大佘太地区,地处著名历史人物佘太君故地而得名。本文采用常规宝石学测试方法、X粉晶衍射分析、红外吸收光谱及激光拉曼光谱测试方法对"佘太翠"玉的宝石学特征、谱学特征和结构特征进行了分析和研究。研究结果表明,"佘太翠"玉的折射率在1.53～1.54,密度为2.65～2.79cm-1,除纯白色品种硬度偏低(<5)外,硬度为6.5～7。"佘太翠"玉除纯白色品种外,主要成分均为SiO2,并可含有一定量的其他杂质矿物,属石英岩玉;纯白色"佘太翠"玉,主要组成矿物为白云石(含量约为63.91%),并含有一定量的SiO2(含量约为34.85%)和微量的方解石及钠长石,属白云石玉。

The gemological testing methods, infrared absorption spectrum, Raman spectrum and X-ray powder diffraction were employed to study the gemological characteristics, spectral characteristics and structural features of the ＂She tai cui＂ jade. It is indicated that most ＂She tai cui＂ jade has the refractive index in the range of 1.53 to 1.54, and a density of 2. 65-2. 79 cm-1 , and the hardness of 6.5 to 7 in addition to the low hardness （〈5） for the pure white one. The mineral constitution is dominated by quartz in most of the ＂She tai cui＂ jade, except the white one, which is dominated by dolomite （about 63.91%）. The former may contain a certain amount of other impure minerals and is attributed to the quartzite jade, while the latter contains a certain a- mount of SiO2 （about 34.85%） and a trace amount of calcite and albite, and is attributed to the dolomite jade.