Gemological and Mineralogical Characteristics of "Yan Jade"
详细信息
- 责任者：Li Dongsheng (College of Earth Sciences ; Guilin University of Technology ; Guilin 541004 ; China) ; Zhang Liangju
- 刊名：Journal of Guilin University of Technology
- 出版年：2011
- 卷期：31(1)
- 关键词：硬玉 ; jadeite ; 矿物学 ; mineralogy
- 页码：p.19-22
- 图表：7 illus., 6 refs.
- 分类号：0700
- issnNo：ISSN1674-9057
- isbnNo：CN45-1375/N
摘要
The art products of "Yan jade" are usually shaped in cabochon cut, Buddha or Guanyin,appear slightly olivine-green "glimmering"and locally "microwavy lined (striations)". According to X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy dispersive diffraction (EDS) and infrared spectroscopy (IR) analyses,mineral component of "Yan jade" consists of jadeite. The results indicate that the jadeite of "Yan jade" has two generations: subhedral-prismatic crystal early with 1.2~1.5 mm in length and 0.35~0.8 mm in width and allotriomorphic granular crystal late about diameter (D) of 0.2~0.5 mm. There are blue dyeing agents in cracks or cleavages of jadeites.