新疆昆仑金玉谱学特征的研究

Research on spectral characteristics of Kunlun golden jade in Xinjiang

新疆昆仑金玉以其色泽金黄油润而得名。通过常规宝石学鉴定方法对昆仑金玉进行了肉眼观察、折射率、比重和紫外荧光等测试,进一步采用红外光谱、拉曼光谱和紫外-可见光谱测试手段对昆仑金玉的谱学特征进行了分析。结果表明,昆仑金玉的折射率点测为1.55~1.57,比重范围为2.406~2.463。昆仑金玉的红外光谱特征反射峰的峰形、峰位、峰强基本一致;拉曼图谱表现为蛇纹石族矿物的拉曼峰位;金黄色主要是由于Fe^(3+)离子的电子跃迁所致。

Xinjiang Kunlun golden jade is famous for its beautifully golden color.Firstly,Kunlun golden jades are tested by conventional gemological identification methods,including the naked-eye observation,refractive index,specific gravity and ultraviolet fluorescence.Secondly,spectral characteristics of Kunlun golden jades are analyzed by means of infrared spectra,Raman spectra and UV-Vis spectra.Thirdly,some important conclusions are drawn from analyzing the testing samples data.The results show that the refractive indexes are range from 1.55 to 1.57 with point measurement,the specific gravity change from 2.406 to 2.463.The peak shapes,peak positions,peak intensities of infrared spectra are basically the same.The Raman spectra characteristics belong to the typical peaks of serpentine minerals.The golden color is mainly due to Fe^（3＋） electron transition.