CARBON ISOTOPIC COMPOSITION AND ORIGIN OF SIC FROM KIMBERLITES OF YAKUTIA, RUSSIA

dc.contributor.author	Mathez E.A.
dc.contributor.author	Fogel R.A.
dc.contributor.author	Hutcheon I.D.
dc.contributor.author	Marshintsev V.K.
dc.date.accessioned	2020-12-03T08:48:37Z
dc.date.available	2020-12-03T08:48:37Z
dc.date.issued	1995
dc.identifier	https://elibrary.ru/item.asp?id=31120221
dc.identifier.citation	Geochimica et Cosmochimica Acta, 1995, , 4, 781-791
dc.identifier.issn	0016-7037
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/20344
dc.description.abstract	The stability of moissanite (SiC) has been computed for upper mantle conditions using the internally optimized thermodynamic dataset for the Mg-Si-O compounds of Fei et al. (1990). The computations consider the effects of pressure and temperature on the elastic properties of phases involved in the reactions. The maximum stability of moissanite throughout the upper mantle is typically five to six orders of magnitude lower in oxygen fugacity (fO2) than the Fe metal-wüstite oxygen buffer at equivalent temperature and pressure, in agreement with previous calculations. Under conditions of SiC stability, silicates will be Fe-free, Fe metal will contain substantial amounts of Si but little C in solution, and Mg-rich sulfides will be stable.
dc.title	CARBON ISOTOPIC COMPOSITION AND ORIGIN OF SIC FROM KIMBERLITES OF YAKUTIA, RUSSIA
dc.type	Статья

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