Graphite and diamond formation via the interaction of iron carbide and Fe,Ni-sulfide under mantle P–T parameters


Дәйексөз келтіру

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Ашық рұқсат Ашық рұқсат
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Рұқсат жабық Тек жазылушылар үшін

Аннотация

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.

Авторлар туралы

Yu. Bataleva

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Хат алмасуға жауапты Автор.
Email: bataleva@igm.nsc.ru
Ресей, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090

Yu. Palyanov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: bataleva@igm.nsc.ru
Ресей, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090

Yu. Borzdov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: bataleva@igm.nsc.ru
Ресей, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090

N. Sobolev

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk State University

Email: bataleva@igm.nsc.ru
Ресей, pr. Akad. Koptyuga 3, Novosibirsk, 630090; Novosibirsk, 630090

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