桂林理工大学学报2011，Vol.31Issue(3)：339-343,5.
硅铍石的宝石学特征
Gemological Characteristics of Phenakite
摘要
Abstract
In the research on gemological phenakite, less study is found about the gemological characteristics, chemical composition and infrared spectra of yellowish brown gem quality phenakite by standard gemological techniques, lectron microprobe analyses, fourier transform infrared spectrometer, and LA - IGP - MS. Electron micro-probe analyses show the less contents of major chemical composition such as w(SiO2) 54. 73% and w(BeO) (cal. ) 45.62% in phenakite which are close to the theoretical values respectively. LA - ICP - MS indicates the contents of minor elements as well as the rare earth elements among which the contents of Ti and Fe are only 338 × 10-6 and 11. 46 ×10-6, speculating brownish yellow color acquired by irradiation. The IR spectra exhibites the characteristic vibrations of phenakite which are assigned accordingly. The result shows two major vibrational bands center around 600 -800 cm-1 and 850 - 1 100 cm-1. Phenakite can be readily distinguished with other similar gems by standard gemological testing and IR spectra.关键词
硅铍石/宝石学/激光等离子质谱分析/红外光谱/人工辐照Key words
phenakite/ gemological characteristics/ laser ablation inductively coupled plasma mass spectrome-try (LA-ICP-MS)/ IR spectra/ artificial irradiation分类
天文与地球科学引用本文复制引用
蔡佳,余晓艳,刘春花..硅铍石的宝石学特征[J].桂林理工大学学报,2011,31(3):339-343,5.基金项目
矿物岩石材料国家实验室开放基金项目(08001) （08001）
