Gemological Characteristics of Phenakite
详细信息
- 责任者：Cai Jia (School of Gemology ; China University of Geosciences ; Beijing 100083 ; China) ; Yu Xiaoyan
- 刊名：Journal of Guilin University of Technology
- 出版年：2011
- 卷期：31(3)
- 关键词：硅铍石 ; phenakite
- 页码：p.339-343
- 图表：3 illus., 5 tables, 9 refs.
- 分类号：0700
- issnNo：ISSN1674-9057
- isbnNo：CN45-1375/N
摘要
Electron microprobe 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.