Study on Mineralogy of Guangning Jade
详细信息
- 责任者：Guo Qinghong (Institute of Earth Environment & Resources ; Sun Yat-Sen University ; Guangzhou 510275 ; China) ; Zhou Yongzhang
- 刊名：Acta Scientiarum Naturalium Universitatis Sunyatseni
- 出版年：2010
- 卷期：49(3)
- 关键词：玉石 ; jade ; 绢云母 ; sericite ; 广东 ; Guangdong Province
- 页码：p.146-151
- 图表：5 illus., 2 tables, 15 refs.
- 分类号：0700
- issnNo：ISSN0529-6579
- isbnNo：CN44-1241/N
摘要
The Guangning jade is a precious type of Chinese jades,which is found in Guangning County,Guangdong Province. Four types of different colored jade stones were sampled from a jade deposit.Their mineralogical characteristics were analyzed using XPD, SEM, DTA, IR and EMPA techniques.The Guangning jade is mainly composed of 2 M1 sericite,and secondly chlorite.Both XPD and IR results indicate daunialite does not exist in the crystal structure of sericite.The analysis of DTG shows that the dehydroxylation tempreture of samples is beyond 600 ℃, which is different from hydromica.The micro-texture of sericite shows flake-shaped, and the minerals arrange along the long-axis of crystal,interleaved by each other, showing overlapped and flake interleaved microstructure.The EMPA suggests that sericite is rich in Si, K, Al and Cr. Those rich in Cr can be grouped into Cr-bearing sericite.