Инд. авторы: | Bobrov A.V., Dymshits A.M., Litvin Y.A., Bindi L. |
Заглавие: | The Mg 3Al 2Si 3O 12-Na 2MgSi 5O 12 system at pressures of 7.0 and 8.5 GPa and a temperature of 1300-1800°C: Phase relationships and crystallization of Na-bearing majoritic garnet |
Библ. ссылка: | Bobrov A.V., Dymshits A.M., Litvin Y.A., Bindi L. The Mg 3Al 2Si 3O 12-Na 2MgSi 5O 12 system at pressures of 7.0 and 8.5 GPa and a temperature of 1300-1800°C: Phase relationships and crystallization of Na-bearing majoritic garnet // Moscow University Geology Bulletin. - 2012. - Vol.67. - Iss. 5. - P.289-297. - ISSN 0145-8752. |
Внешние системы: | DOI: 10.3103/S014587521205002X; SCOPUS: 2-s2.0-84869051104; |
Реферат: | eng: The results of an experimental study of the pyrope (Mg 3Al 2Si 3O 12)-jadeite (NaAlSi 2O 6) system at P = 7.0 and 8.5 GPa and T = 1300-1800°C are summarized in this paper. The main phases that were obtained in the experiments are garnet, pyroxene, kyanite (in some cases corundum), and quenched melt. Garnets are characterized by a stable Na 2O admixture (up to 0.6 wt % at 7.0 GPa and up to 0.8 wt % at 8.5 GPa) and the high silicon content (Si = 3.016-3.166). The maximal sodium concentrations in garnet were found at the solidus of the system, which results from an increase of the coefficient of sodium partitioning between garnet and melt during a temperature decrease. © 2012 Allerton Press, Inc.
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Ключевые слова: | phase relations; Na-bearing majoritic garnet; jadeite; high-pressure experiment; eclogite; |
Издано: | 2012 |
Физ. характеристика: | с.289-297 |