Gemological Characteristics of Guilin “Chicken-Blood-Red Jasper”

• 责任者：Liu Chun (College of Earth Sciences ; Guilin University of Technology ; Guilin 541004 ; China)
• 刊名：Journal of Guilin University of Technology
• 出版年：2010
• 卷期：30(2)
• 关键词：碧玉 ; jasper ; 广西 ; Guangxi
• 页码：p.223-228
• 图表：7 illus., 4 refs.
• 分类号：1002
• issnNo：ISSN1674-9057
• isbnNo：CN45-1375/N

The original deposit of Guilin “chicken-blood-red jasper” lies in the formation of Sanmen set, Danzhou group, Paleozoic Erathem around Sanmen in Longsheng of Guilin. Analyses of polarizing microscopy, X-ray powder diffraction and determination of physical properties indicate that the “Blood” of “chicken-blood-red jasper” is composed of particulate quartz and the dust-like hematite shows a micro-granoblastic texture, including crystalloblastic texture. Quality evaluation of “chicken-blood-red jasper” is mainly based on blood color, blood type, blood shape and blood concentration. “Chicken-blood-red jasper” is classified into four grades: highest grade, top grade, general grade and low grade.