THERMODYNAMICS AND PETROLOGY OF CUMMINGTONITE

dc.contributor.author	Evans B.W.
dc.contributor.author	Ghiorso M.S.
dc.date.accessioned	2020-11-19T06:43:27Z
dc.date.available	2020-11-19T06:43:27Z
dc.date.issued	1995
dc.identifier	https://elibrary.ru/item.asp?id=25557290
dc.identifier.citation	American Mineralogist, 1995, , , 649-663
dc.identifier.issn	0003-004X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/19007
dc.description.abstract	Natural cummingtonite encompasses virtually the entire compositional range from Mg to Fe end-member. It occurs in several metamorphic rock types, but predominantly in amphibolites and metaironstones. Most examples were produced under amphibolite-facies conditions. Cummingtonite is also a critical indicator of T, aH2O, and fO2 in silicic volcanic rocks from shallow magma chambers. The solution properties of cummingtonite reflect the entropic and enthalpic consequences of temperature-dependent, long-range ordering of Mg and Fe2+ on the M1 + M3, M2, and M4 sites, plus modest site-mismatch energies. The stability of cummingtonite in relation to other phases is discussed.
dc.title	THERMODYNAMICS AND PETROLOGY OF CUMMINGTONITE
dc.type	Статья

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