| 四川软玉(透闪石玉)猫眼热相变的Raman光谱研究 |
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| 引用本文： | 卢保奇,夏义本,亓利剑,尤静林.四川软玉(透闪石玉)猫眼热相变的Raman光谱研究[J].光谱学与光谱分析,2005,25(11):1824-1826. |
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| 作者姓名： | 卢保奇 夏义本 亓利剑 尤静林 |
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| 作者单位： | 上海大学材料科学与工程学院电子信息材料系,上海,200072;中国地质大学珠宝学院,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金（49772096）和上海市教育委员会发展基金（03AK23）资助项目. |
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| 摘 要： | 利用Raman光谱和X射线粉晶衍射谱（XRD）对四川软玉猫眼热相变的过程和最终产物进行了研究。结果表明：加热至900℃时，软玉猫眼中透闪石完全脱OH基，结构被破坏，出现新物相671cm^-1的特征强单峰。至1000℃时，1014cm^-1谱峰强度显著增强，同时出现573和934cm-1的弱谱峰。至1100℃时，1033cm^-1弱谱峰出现。研究表明热转变的最终产物是一种成分和结构都类似于透辉石的Ca-Mg辉石。这一结果被XRD测试所证实。
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| 关 键 词： | 软玉猫眼 透闪石 Raman光谱 XRD 热相变 |
| 文章编号： | 1000-0593（2005）11-1824-03 |
| 收稿时间： | 2004-06-18 |
| 修稿时间： | 2004-11-01 |
Raman Spectra Study of Thermal Transformation of Nephrite Cat's Eye from Sichuan Province |
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| LU Bao-qi,XIA Yi-ben,QI Li-jian,YOU Jing-lin.Raman Spectra Study of Thermal Transformation of Nephrite Cat's Eye from Sichuan Province[J].Spectroscopy and Spectral Analysis,2005,25(11):1824-1826. |
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| Authors: | LU Bao-qi XIA Yi-ben QI Li-jian YOU Jing-lin |
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| Institution: | 1. School of Materials and Engineering, Shanghai University, Shanghai 200072, China; 2. Gemology Institute, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Raman spectrum and X-ray powder diffraction (XRD) were used to study the process andproduct of thermal transformation of nephrite cat's eye from Sichuan province. The results indicate that upon being heated till 900 degrees C, tremolite in the nephrite cat's eye is dehydrated completely and the appearance of a new characteristic band near 671 cm(-1) indicates the form of a new product. At 1 000 degrees C, the intensity of band near 1014 cm(-1) rises obviously, and the weak bands near 573 cm(-1) and 934 cm(-1) present. Up to 1100 degrees C, the band near 1033 cm(-1) appears. All these evidences show that the final thermal transformation product is identified as Ca-Mg pyroxene which is similar to diopside both in structure and in composition. This conclusion is confirmed by XRD. |
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| Keywords: | Nephrite cat's eye Tremolite Raman spectrum XRD Thermal transformation |
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