INFRARED SPECTROSCOPIC STUDY OF FILLED MOONSTONE

被引:0
|
作者
Li, Jianjun [1 ,2 ]
Weng, Xiaofan [3 ]
Yu, Xiaoyan [3 ]
Liu, Xiaowei [1 ]
Chen, Zhenyu [4 ]
Li, Guihua [1 ]
机构
[1] Natl Gold Diamond Testing Ctr, Jinan, Shandong, Peoples R China
[2] Shandong Inst Metrol, Shandong Prov Key Lab Metrol & Measurement, Jinan, Peoples R China
[3] China Univ Geosci, Sch Gemol, Wuhan, Peoples R China
[4] Chinese Acad Geol Sci, Inst Mineral Resources, Beijing, Peoples R China
来源
GEMS & GEMOLOGY | 2013年 / 49卷 / 01期
关键词
D O I
10.5741/GEMS.49.1.28
中图分类号
P57 [矿物学];
学科分类号
070901 ;
摘要
The laboratory of the National Gold & Diamond Testing Center (NGDTC) encountered some plagioclase (moonstone) beads with blue adularescence. Fifteen of the 22 moonstones fluoresced moderate to strong bluish white to long-wave UV, with the fluorescence visible in fissures. Electron microprobe analysis of one bead and micro-infrared reflectance spectra of all 22 samples indicated a composition nearly identical to albite. The specimens with strong fluorescence exhibited 3053 and 3038 cm(-1) peaks in their direct transmission infrared spectra, confirming impregnation by a material with benzene structure. This treatment can be detected with a standard gemological microscope by observing characteristics such as relief lines.
引用
收藏
页码:28 / 34
页数:7
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