| Raman Spectroscopy of Garnet—group Minerals |
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| 引用本文： | 彭明生 H.K.MAO 等.Raman Spectroscopy of Garnet—group Minerals[J].中国地球化学学报,1994,13(2):176-183. |
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| 作者姓名： | 彭明生 H.K.MAO |
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| 作者单位： | [1]DivisionofQuantumMineralogy,DepartmentofGeology,CentralUniversityofTechnology,Changsha410083,China [2]Ge,DepartmentofGeology,CentralUniversityofTechnology,Changsha410083,China |
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| 摘 要： | The Raman spectra of the natural end members of the garnet-group minerals,which include pyrope, almandine and spessarite of Fe-Al garnet series and grossularite ,andradite and uvarovite of Ca-Fe garnet series, have been strdied.Measured Raman spectra of these minerals are reasonably and qualitatively assigned to the internal modes, translational and rotatory modes of SiO4 tetrahedra, as well as the translational motion of bivalent cations in the X site.The stretch and rotatory A1g modes for the Fe-Al garnet series show obvious Raman shifts as compared with those for the Ca-Fe garnet series ,owing to the cations residing in the Xsite connected with SiO4 tetrahedra by sharing the two edges.The Raman shifts of all members within either of the series are attributed mainly to the properties of cations in the X site for the Fe-Al garnet series andin the Y site for the Ca-Fe garnet series.
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| 关 键 词： | 拉曼光谱 石榴石 榴子石 铁铝榴石 晶体结构 |
Raman spectroscopy of garnet-group minerals |
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| Peng Mingsheng,H. K. Mao,Li Dien,E. C. T. Chao.Raman spectroscopy of garnet-group minerals[J].Chinese Journal of Geochemistry,1994,13(2):176-183. |
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| Authors: | Peng Mingsheng H K Mao Li Dien E C T Chao |
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| Institution: | (1) Division of Quantum Mineralogy Department of Geology, Central University of Technology, 410083 Changsha, China;(2) Geophysical Laboratory, Carnegie Institution of Washington, 2801 Upton Street, N.W., 20008 Washington D.C., USA;(3) U. S. Geological Survey, 959 National Center, Reston, 22092 Virginia, USA |
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| Abstract: | The Raman spectra of the natural end members of the garnet-group minerals, which include pyrope, almandine and spessarite
of Fe-Al garnet series and grossularite, andradite and uvarovite of Ca-Fe garnet series, have been studied. Measured Raman
spectra of these minerals are reasonably and qualitatively assigned to the internal modes, translational and rotatory modes
of SiO4 tetrahedra, as well as the translational motion of bivalent cations in the X site. The stretch and rotatory Alg modes for the Fe-Al garnet series show obvious Raman shifts as compared with those for the Ca-Fe garnet series, owing to
the cations residing in the X site connected with SiO4 tetrahedra by sharing the two edges. The Raman shifts of all members within either of the series are attributed mainly to
the properties of cations in the X site for the Fe-Al garnet series and in the Y site for the Ca-Fe garnet series. |
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| Keywords: | Raman spectra garnet-group mineral Raman shift |
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