Graphite and diamond formation via the interaction of iron carbide and Fe,Ni-sulfide under mantle P–T parameters
| Autor: | Yu. V. Bataleva, Nikolay V. Sobolev, Yu. N. Palyanov, Yu. M. Borzdov |
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| Rok vydání: | 2016 |
| Předmět: |
S system
chemistry.chemical_classification 010504 meteorology & atmospheric sciences Sulfide Mineralogy Diamond engineering.material 010502 geochemistry & geophysics 01 natural sciences Experimental research Mantle (geology) Carbide law.invention Chemical engineering chemistry law Earth and Planetary Sciences (miscellaneous) engineering General Earth and Planetary Sciences Graphite Crystallization Geology 0105 earth and related environmental sciences |
| Zdroj: | Doklady Earth Sciences. 471:1144-1148 |
| ISSN: | 1531-8354 1028-334X |
| DOI: | 10.1134/s1028334x16110015 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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