COMPLETE SOLID-SOLUTION BETWEEN NA3AL2 (PO4)3 AND MG3AL2 (SIO4)3 GARNETS AT HIGH PRESSURE
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dc.contributor.author | Brunet F. | |
dc.contributor.author | Bonneau V. | |
dc.contributor.author | Irifune T. | |
dc.date.accessioned | 2024-09-03T09:56:25Z | |
dc.date.available | 2024-09-03T09:56:25Z | |
dc.date.issued | 2006 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=31331471 | |
dc.identifier.citation | American Mineralogist, 2006, 91, 1, 211-215 | |
dc.identifier.issn | 0003-004X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/44872 | |
dc.description.abstract | Syntheses along the Mg3Al2 (SiO4)3-Na3Al2 (PO4)3 join were carried out in the 15-17 GPa range at temperatures between 1200 and 1600 °C. An Na3Al2(PO4)3 compound of garnet-like structure, with a cubic-cell parameter of 11.579(2) Å, was synthesized and characterized. Intermediate compositions are also found to crystallize in the garnet structure. Between pyrope and Na3Al2(PO4)3, the cubic unit-cell volume increases by 3.1%. In addition, nominal compositions, Mg2.5Na0.5Al2Si2.5 P0.5O12 and Mg2Na1 Al2Si2 P1O12, were run at 3 GPa and 875 °C. They yielded garnet, among other phases, but with no significant phosphorus incorporation as indicated by a pyrope-like unit-cell volume. Phosphorus content in pyrope from the UHP Dora-Maira quartzites appears as a potential pressure indicator where UHP garnet coexists with phosphate minerals. The P-content in upper mantle garnets can be used as a probe of phosphorus activity in the host rock. | |
dc.subject | CRYSTAL SYNTHESIS | |
dc.subject | GARNET | |
dc.subject | HIGH-PRESSURE STUDIES | |
dc.subject | P-SI GARNET SOLID-SOLUTION SERIES | |
dc.subject | PETROGRAPHY | |
dc.subject | PHOSPHATE GARNET | |
dc.subject | PHOSPHORUS IN GARNET | |
dc.subject | XRD DATA | |
dc.title | COMPLETE SOLID-SOLUTION BETWEEN NA3AL2 (PO4)3 AND MG3AL2 (SIO4)3 GARNETS AT HIGH PRESSURE | |
dc.type | Статья | |
dc.identifier.doi | 10.2138/am.2006.2053 |
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