STRUCTURAL RELATION OF HYDROUS RINGWOODITE TO HYDROUS WADSLEYITE
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dc.contributor.author | Kudoh Y. | |
dc.date.accessioned | 2021-03-30T10:40:28Z | |
dc.date.available | 2021-03-30T10:40:28Z | |
dc.date.issued | 2001 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=872538 | |
dc.identifier.citation | Physics and Chemistry of Minerals, 2001, 28, 8, 523-530 | |
dc.identifier.issn | 0342-1791 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/27174 | |
dc.description.abstract | The sequential displacement mechanism based on the oxygen-lattice cubic closest packing (c.c.p.) in the <2 0 1> direction was proposed in this study. All displacements of cations are within the OT and the O layers with the length of displacement vector being around 1.7 or 2.9 A, contrary to displacement of around 5.0 A for models proposed previously. The difference in atomic arrangement between hydrous wadsleyite and hydrous ringwoodite is small. The atomic arrangement of the O layer of hydrous wadsleyite is essentially the same as that of hydrous ringwoodite when Mg vacancies preferentially exist in the O layer. The partial occupancies of normally vacant tetrahedral sites reported in the hydrous-β and hydrous-γ structures may possibly be caused by the existence of Mg vacancies at the octahedral sites through phase transition from hydrous-β to hydrous-γ or from hydrous-γ to hydrous-β phases. | |
dc.subject | HYDROUS RINGWOODITE | |
dc.subject | LOCAL CHARGE UNBALANCE | |
dc.subject | MG-SI DISORDER | |
dc.subject | TETRAHEDRAL VACANCY | |
dc.title | STRUCTURAL RELATION OF HYDROUS RINGWOODITE TO HYDROUS WADSLEYITE | |
dc.type | Статья |
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