Experimental Modeling of C0-Forming Processes Involving Cohenite and CO2-Fluid in a Silicate Mantle
- Authors: Bataleva Y.V.1,2, Palyanov Y.N.1,2, Borzdov Y.M.1,2, Bayukov O.A.3, Sobolev N.V.1,2
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
- Novosibirsk State University
- Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences
- Issue: Vol 483, No 1 (2018)
- Pages: 1427-1430
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/194327
- DOI: https://doi.org/10.1134/S1028334X18110016
- ID: 194327
Cite item
Abstract
Experimental studies were performed in the Fe3C–SiO2–(Mg,Ca)CO3 system (6.3 GPа, 1100–1500°C, 20–40 h). It is established that the carbide–oxide–carbonate interaction leads to the formation of ferrosilite, fayalite, graphite, and cohenite (1100 and 1200°С), as well as a Fe–C melt (1300°С). It is determined that the main processes in the system are decarbonation, redox-reactions of cohenite and a CO2-fluid, extraction of carbon from carbide, and crystallization of metastable graphite (± diamond growth), as well as the formation of ferriferous silicates. The interaction studied can be considered as a simplified model of the processes that occur during the subduction of oxidized crustal material to reduced mantle rocks.
About the authors
Yu. V. Bataleva
Sobolev Institute of Geology and Mineralogy,Siberian Branch, Russian Academy of Sciences; Novosibirsk State University
Author for correspondence.
Email: bataleva@igm.nsc.ru
Russian Federation,
Novosibirsk, 630090; Novosibirsk, 630090
Yu. N. Palyanov
Sobolev Institute of Geology and Mineralogy,Siberian Branch, Russian Academy of Sciences; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation,
Novosibirsk, 630090; Novosibirsk, 630090
Yu. M. Borzdov
Sobolev Institute of Geology and Mineralogy,Siberian Branch, Russian Academy of Sciences; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation,
Novosibirsk, 630090; Novosibirsk, 630090
O. A. Bayukov
Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences
Email: bataleva@igm.nsc.ru
Russian Federation, Krasnoyarsk, 660036
N. V. Sobolev
Sobolev Institute of Geology and Mineralogy,Siberian Branch, Russian Academy of Sciences; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation,
Novosibirsk, 630090; Novosibirsk, 630090