| 宝石级A,B翡翠研究 |
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| 引用本文： | 姚德贤,莫伟基.宝石级A,B翡翠研究[J].中山大学学报(自然科学版),1996,35(5):127-130. |
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| 作者姓名： | 姚德贤 莫伟基 |
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| 作者单位： | 中山大学地球科学系(姚德贤)，香港亚洲宝石学院／鉴定所(莫伟基) |
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| 摘 要： | 测得翡翠饰品Ａ，Ｂ货的平均折射率分别为１．６５５，１．６５５．平均密度分别为３．３１０ｇ／ｃｍ３，３．２５８ｇ／ｃｍ３．Ｘ光衍射分析Ｂ货的玉料有硬玉玉料和钠铬辉石玉料２种．红外光谱、喇曼光谱分析Ａ、Ｂ货，均出现典型的硬玉谱线．Ｂ货的红外光谱和喇曼光谱均出现碳氢基团的谱线．电子探针分析Ｂ货含大量的碳元素．Ａ，Ｂ和Ｃ货的扫描电镜图像明显不同
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| 关 键 词： | 翡翠A，B货，红外光谱，喇曼光谱，扫描电镜 |
The Study of Gem Quality of A and B Grade Jadeite |
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| Yao Dexian,\ Mo Weiji.The Study of Gem Quality of A and B Grade Jadeite[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,1996,35(5):127-130. |
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| Authors: | Yao Dexian \ Mo Weiji |
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| Institution: | Yao Dexian \ Mo Weiji |
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| Abstract: | The jadeitic jewelry in the world market is divided into four grade: A,B,B C, and C. For A and B grade jadeite, it is determined that their average infractive index is respectively 1 655, 1 655 and that their average specific gravity 3 310, 3 258 g/cm 3 X ray diffraction showed jadeitic material and ureyitic material can be the two kinds of jade material of B grade jadeite. The typical spectrum of jadeite appeared in the infrade spectra and Raman spectra of both A and B grade jadeite, while B grade jadeite displayed the spectrum of C H group in the two kinds of spectra. The results of electron probe test revealed much carbon in B grade jadeite and the scanning electron microscope gave significantly different graphs of A B and C grade jadeite. With information revealing the difference between A and B grade jadeite, non damaged identification of all kinds of jadeite can be conducted. |
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| Keywords: | A jadeite B jadeite infrade spectra raman spectra scanning electron microscope |
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