一例孔雀石仿制品的宝石学特征

Gemmological Characteristic of a Malachite Imitation

对一件外观酷似孔雀石的样品进行常规宝石学特征测试,结合红外吸收光谱仪、紫外可见光谱仪、X荧光光谱仪分析,结果表明,样品折射率为1.576,长波紫外灯下具有黄绿色荧光,X荧光光谱分析主要含Ba和Sr元素,红外吸收光谱测试特征吸收峰为609cm^-1、636cm^-1、702cm^-1、748cm^-1、984cm^-1、1080cm^-1、1123cm^-1、1188cm^-1、1285cm^-1、1377cm^-1、1454cm^-11493cm^-1、1601cm^-1、1639cm^-1、1732cm^-1、2858cm^-1、2936cm^-1,紫外可见光谱分析与孔雀石谱图存在明显差别,经上述分析确定样品为醇酸树脂有机物和重晶石的混合物。

A sample of a malachite-like sample was subjected to a standardgemological tests.The infrared absorption spectrometer,ultraviolet-visible spectrometer,and X-ray fluorescence spectrometerwere applied.The test results showed that the sample had a refractive index of 1.576 and yellow-green fluorescence under a long-wave UV lamp.TheXRF analysis showed that the samplecontained Ba and Sr elements.The infrared absorption spectrum indicated that the sample had the peaks of 609,636,702,748,984,1080,1123,1188,1285,1377,14541493,1601,1639,1732,2858,and 2936 cm^-1.UV-visible spectrum analysis gave a clear difference with the malachite spectrum.Through the above analysis,the sample was identified as a mixture of alkyd resin organic matter and barite.