Graphite and diamond formation via the interaction of iron carbide and Fe,Ni-sulfide under mantle P–T parameters
- Authors: Bataleva Y.V.1,2, Palyanov Y.N.1,2, Borzdov Y.M.1,2, Sobolev N.V.1,2
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch
- Novosibirsk State University
- Issue: Vol 471, No 1 (2016)
- Pages: 1144-1148
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/189086
- DOI: https://doi.org/10.1134/S1028334X16110015
- ID: 189086
Cite item
Abstract
Experimental research in the Fe3C–(Fe,Ni)S system was carried out. The objective of the investigation was to model the reactions of carbide–sulfide interaction related to graphite (diamond) formation in reduced lithosphere mantle domains. T ≤ 1200°C is the formation temperature of the Ni-cohenite + graphite assemblage coexisting with two immiscible melts such as sulfide (Fe60–Ni3–S37)L and metal–sulfide (Fe71–Ni7–S21–C1)L containing dissolved carbon. Т ≥ 1300°C is the generation temperature of a unified melt such as (Fe80–Ni6–S10–C4)L characterized by graphite crystallization and diamond growth. The extraction of carbide carbon during the interaction with the sulfide melt can be considered as one of the potential mechanisms of graphite and diamond formation in the reduced mantle.
About the authors
Yu. V. Bataleva
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Author for correspondence.
Email: bataleva@igm.nsc.ru
Russian Federation, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090
Yu. N. Palyanov
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090
Yu. M. Borzdov
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090
N. V. Sobolev
Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University
Email: bataleva@igm.nsc.ru
Russian Federation, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090