湖北充填绿松石与天然绿松石的宝石学特征对比研究

Comparative Study on Gemological Characteristics of Filled and Natural Turquoises from Hubei Province

为了区分湖北天然绿松石与充填处理绿松石,本文利用宝石显微镜、偏光显微镜、Diamond View;、傅里叶红外光谱仪、拉曼光谱仪、扫描电镜、差热分析仪对充填处理样品的充填物进行判定,并对天然样品、充填处理样品的基本宝石学特征、微观特征、谱学特征及热稳定性进行对比研究。测试表明充填处理样品中的充填物为丙烯酸酯类树脂;扫描电镜下充填处理样品的矿物颗粒棱角浑圆,有粘滞感。差热分析测试表明充填处理样品失重有3个阶段,但只有2个阶段与失水有关,第3阶段的失重推测与充填物有关。充填处理样品失去同种类型的水所需的温度比天然样品低,说明充填处理样品的热稳定性低于天然样品。

In order to distinguish natural turquoise from filling Turquoise from Hubei Province, Gem Microscope, polarizing microscope, Diamond View;, Fourier Transform Infrared Spectroscopy(FTIR), Raman Spectroscopy, Scanning Electron Microscopy(SEM) and Differential Thermal Analysis(DTA) were used to study their gemological characteristics. The results indicate that the material used in the filled treatment is acrylate resin. Under the scanning electron microscope, the mineral particles of the filled sample are round and sticky. There are three stages in the weight loss of glue injection treated samples in DTA, but only two stages are related to water loss. The weight loss in the third stage is speculated to be related to the filled material. Moreover, the temperature required for the filled sample to lose the same type of water is lower than that of the natural sample, so it can be deduced that the thermal stability of the filled sample is lower than that of the natural sample.