岩矿测试2012，Vol.31Issue(5)：794-797,4.
辽宁桓仁软玉的宝石学特征研究
Gemological Characteristics of Nephrite Jade from Huanren, Liaoning
林维峰1
作者信息
- 1. 辽宁省地质矿产研究院,辽宁沈阳110032
- 折叠
摘要
Abstract
By using routine gemological testing, thin section observation under microscope, Fourier Transform Infrared (FTIR) Spectrometric analysis and the chemical analysis method, a systematic study of nephrite jade from Huanren has been investigated for minerals, chemical compositions and gemological characteristics. The results indicate a refraction index of 1. 60, specific density of 3. 08 and Mohs hardness of about 6. 5. Thin section observation by polarizing microscope show that the main mineral composition is of epidote and hornblende and the impurity minerals are diopside, apatite, carbonate minerals and serpentine among others. The main textures of the jade are inequigranular blastic, foliated pilotaxitic and metasomatic. The specific texture characteristics of the nephrite are responsible for its poor transparency, uneven color distribution, and the inclusions of black spots and green agglomerate. The features of the infrared spectra are very similar to those of standard reference tremolite which indicate that the jade is indeed nephrite. The chemical analysis results were similar to Hetian's jade and Xiuyan's nephrite jade. The impurities of hornblende ( biotitization) affected the quality of the jade.关键词
软玉/宝石学特征/辽宁桓仁Key words
nephrite jade/ gemological characteristics/ Huanren of Liaoning Province分类
天文与地球科学引用本文复制引用
林维峰..辽宁桓仁软玉的宝石学特征研究[J].岩矿测试,2012,31(5):794-797,4.
