X-Ray Single Crystal Studies of Olivines in Yamato-74354 and -74371 Meteorites
The olivines from Yamato-74354 (L5-6) and -74371 (H5) meteorites have been studied by X-ray diffraction method. The crystal structures of olivines have been refined using X-ray intensity data. The site preference of metal cations for M1 and M2 sites in both olivine structures has been determined. Th...
| Main Authors: | , |
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| Format: | Report |
| Language: | English |
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Department of Earth Sciences, Faculty of Science, Kanazawa University
1980
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| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1092 http://id.nii.ac.jp/1291/00001092/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1092&item_no=1&attribute_id=18&file_no=1 |
| Summary: | The olivines from Yamato-74354 (L5-6) and -74371 (H5) meteorites have been studied by X-ray diffraction method. The crystal structures of olivines have been refined using X-ray intensity data. The site preference of metal cations for M1 and M2 sites in both olivine structures has been determined. The cation distributions of Mg^<2+> and Fe^<2+> in M1 and M2 sites for these olivines show a slight tendency to disorder. For Yamato-74354 and -74371 olivines, the distribution coefficient K_D is 1.09 and 0.92,respectively. This tendency resembles the tendency of cation distribution in metamorphic olivines. |
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