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- Title
"ICE JADE" FROM GUATEMALA.
- Authors
Zhaoying Huang; Tao Chen; Jinyu Zheng; Zebin Xu
- Abstract
"Ice jade" is a translucent variety of jadeite jade (also known as fei cui) that is generally of high value. Reportedly from the Morales mine in the Izabal Department of Guatemala, it has recently appeared in the Chinese jewelry market. In this study, the structural characteristics, mineral compositions, and color genesis of Guatemalan "ice jade" were studied using scanning electron microscopy, cathodoluminescence, X-ray diffraction, electron probe microanalysis, Raman spectroscopy, and ultraviolet/visible/near-infrared spectroscopy. "Ice jade" is composed almost exclusively of jadeite, with accessory minerals that include omphacite and albite. The chemical composition of the samples studied here was nearly pure sodium pyroxene. A small amount of fine-grained omphacite imparted a pale green color to this material. This "ice jade" exhibited fine-grained texture, occasionally with some microgranular texture. Guatemalan "ice jade" has a unique characteristic appearance, microstructure, accessory minerals, and chemical compositions, but further study is needed to distinguish it from the other origins.
- Subjects
ELECTRON probe microanalysis; SCANNING electron microscopy; RAMAN spectroscopy; TRANSLUCENCY (Optics); ULTRAVIOLET spectroscopy
- Publication
Gems & Gemology, 2024, Vol 60, Issue 1, p26
- ISSN
0016-626X
- Publication type
Article
- DOI
10.5741/GEMS.60.1.26