光谱学与光谱分析 |
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Crystallography Orientation by Molecular Spectrum of Structural Hydroxide in Pyroxene Megacryst |
WANG Rong,ZHANG Bao-min*, ZHAO Shan-rong*, MENG Jie |
Faculty of Earth Science, China University of Geosciences, Wuhan 430074, China |
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Abstract Crystal can be crystallographically oriented by molecular spectrum with the change in band shift, band intensity, and band shape. The three groups of band shift of augite are different between vertical to c-axis and parallel to c-axis: the first peak value 3 629-3 633 red shifts to 3 601-3 616; the same as the second peak value 3 514-3 543; on the contrary, the third peak value 3 460-3 465 is blue shift. The intensity of the first band is equivalent in two directions, while the second and the third parallel to c-axis are much stronger than the vertical. The wave shape is not quite different. The intensity of the Raman spectra vertical to c-axis is stronger than that parallel to c-axis in general, while the band shift and the shape show little difference. It was indicated that the geological tectonic environment can be reflected by the spectra of structural hydroxide with different crystal directions.
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Received: 2009-11-11
Accepted: 2010-02-16
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Corresponding Authors:
ZHANG Bao-min,ZHAO Shan-rong
E-mail: zbmgmy@163.com;shanrongzhao@yahoo.com.cn
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