The Component Composition of Fluid Phase during Crystallization of Subcalcic Chromium Garnet at High Pressure
The results of experimental modeling of the crystallization conditions for subcalcic Cr-rich garnets in the serpentine – chromite – carbonatite system at a pressure of 5 GPa and a temperature of 1300°C are presented. A mineral association of highly magnesian olivine and orthopyroxene, garnet and chrome-spinel is formed in the experiments. It has been established that subcalcic Cr-pyrope can crystallize in the form of metacrystals during metasomatism as a result of infiltration of the fluid phase. In the presence of graphite, the fluid phase has a complex composition with predominance of hydrocarbons and oxygen-, nitrogen-, and sulfur-containing organic compounds with minor amounts of inorganic gases, including CO2 and H2O.
Authors
- Т. А. Бульбак (ORCID: https://orcid.org/0000-0001-7512-716X)
- А. А. Томиленко
- V. V. Lin
- А. А. Чепуров (ORCID: https://orcid.org/0000-0002-0778-2653)
- В. М. Сонин (ORCID: https://orcid.org/0000-0001-8369-2791)
- N. P. Pokhilenko (ORCID: https://orcid.org/0000-0002-3207-1458)
- А. И. Чепуров (ORCID: https://orcid.org/0000-0002-5916-0792)
- Е. И. Жимулев (ORCID: https://orcid.org/0000-0003-3100-7195)
Institutions
- V.S. Sobolev Institute of Geology and Mineralogy (RU)
Publication Details
- Journal
- Doklady Earth Sciences
- Published
- 2025-05-01
- DOI
- https://doi.org/10.1134/s1028334x25605772
- Primary Topic
- Mineralogy and Gemology Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00