| 四川石棉县蛇纹石猫眼的红外吸收光谱研究 |
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| 作者姓名： | 卢保奇 亓利剑 夏义本 |
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| 作者单位： | 1. 上海大学材料学院宝石工艺与技术专业,上海,201800
2. 中国地质大学珠宝学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金(49772096) |
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| 摘 要： | 采用Fourier变换红外吸收光谱和X射线粉晶衍射技术对四川石棉县蛇纹石猫眼进行了研究。红外吸收光谱结果表明:四川蛇纹石猫眼可分为纤蛇纹石和叶蛇纹石两种类型,两者在(960-1100)cm-1和(3600-3690)cm-1的范围内由Si-O伸缩振动的E1类振动和OH伸缩振动表现出的红外谱带分裂强度及谱带特征存在明显的差异。在(960- 1100)cm-1间:纤蛇蚊石的红外光谱分裂成三个明显的谱带,而叶蛇纹石在此区间只有两条谱带。在570cm-1附近的红外谱带以肩状出现;OH伸缩振动区:纤蛇蚊石出现两条红外谱带,而叶蛇蚊石只出现一条红外谱带。X射线粉晶衍射结果表明:叶蛇蚊石具有d202=0．2522nm(I/I0=19)和d203=0．2430nm(I／I0=18)的特征谱线,而纤蛇纹石则具有d202、006=0．2446nm(I／I0=29)的特征谱线,d020>0．245nm近0．249 nm的特征谱线缺失。
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| 关 键 词： | 蛇纹石猫眼 红外吸收光谱 X射线粉晶衍射 纤蛇纹石 叶蛇纹石 |
| 收稿时间： | 2006-02-17 |
| 修稿时间： | 2006年2月17日 |
Study on Infrared spectra of Serpentine Cat's Eye from Shimian country, Sichuan Province, Southwest of China |
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| Authors: | LU Baoqi QI Lijian XIA Yiben |
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| Institution: | 1 School of Materiar s and engineering, Shanghai University, Shanghai 210072 ;2 Gemmological Institute, China University of Geosciences, Wuhan 430074 |
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| Abstract: | FTIR absorption spectra and XRD were used to study serpentine cat's eye from Sichuan province in this paper. The results indicate that serpentine cat's eyes includes two types:chrysotile and antigorite, which have the characteristic bands in the Si - 0 Stretching vibration region around (960 - 1100)cm-1 and OH Stretching vibration region around (3600 -3690) cm-1 respectively. Around (960 - 1100)001-1, chrysotile displays three bands of absorption, while antigorite only has two bands. Upon 570cm-1, antigorite shows a shoulder absorption band. XRD shows that antigorite is characterized by the lines d202 = 0. 2522nm (I/I0 =19) and d203 =0. 2430nm (I/I0 =18) .while chrysotile only has the line 0.2446nm(I/I0 =29) without the line near d020=0.250nm. |
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| Keywords: | serpentine cat's eye samples IR XRD chrysotile chrysotile |
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