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Experimental Study of the Formation of Ba–Cr Titanates in the Fluid-Bearing Chromite–Rutile/Ilmenite System at Т = 1000–1200°С and Р = 1.8–5.0 GPaстатья Исследовательская статья
- Авторы: Butvina V.G., Safonov O.G., Bondarenko G.V., Shapovalov Yu B.
- Журнал: Doklady Earth Sciences
- Том: 504
- Номер: 1
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 248
- Последняя страница: 253
- DOI: 10.1134/S1028334X22050063
- Аннотация: The results of experimental study of crystallization of chromium-bearing Ba-titanates (redlegeite, lindsleyite, and hawthorneite) in the chromite–rutile/ilmenite system in the presence of the H2O–CO2–BaCO3 fluid at pressures of 1.8, 3.5, and 5.0 GPa and temperatures of 1000–1200°C, simulating the formation of these phases through metasomatism of peridotite of the upper mantle, are reported. Experiments showed the formation of Ba–Cr-titanates in the entire pressure range studied and the possibility of joint crystallization of titanates. However, redledgeite is formed only in the Fe-poor chromite–rutile–H2O–CO2–BaCO3 system, whereas minerals of the magnetoplumbite group are preferably crystallized in the system with ilmenite. Lindsleyite was not detected at a pressure of 1.8 GPa. A positive dependence of the Cr content in titanates on pressure was shown. The Raman spectra of redlegeite, lindsleyite, and hawthorneite are presented.
- Добавил в систему: Бутвина Валентина Григорьевна