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- Title
NEPHRITE JADE FROM GUANGXI PROVINCE, CHINA.
- Authors
Zuowei Yin; Cui Jiang; Santosh, M.; Yiming Chen; Yi Bao; Quanli Chen
- Abstract
Nephrite jade with high market value and production potential from the Chinese city of Hechi, in Guangxi Province, was tested by standard gemological methods, polarizing microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and energy-dispersive spectrometry (EDS). The three samples were mainly white and gray-white (with areas of gray, gray-green, dark green, and black) and had a greasy to waxy luster. Within each of these color varieties, the samples exhibited either "band" or dendritic patterns. The band pattern, composed of tremolite, varied in shape and was either transparent or opaque. Its color, transparency, and distribution were different from the unpatterned areas. The dendritic patterns, which had a brownish yellow and dark brown to black color, were composed of chlorite that formed during metamorphism.
- Subjects
GUANGXI Zhuangzu Zizhiqu (China); JADE; MARKET prices; X-ray diffraction; SCANNING electron microscopy; TREMOLITE; METAMORPHISM (Geology)
- Publication
Gems & Gemology, 2014, Vol 50, Issue 3, p228
- ISSN
0016-626X
- Publication type
Article
- DOI
10.5741/GEMS.50.3.228