Ternary-spinel volumes in the system MgAl2O4-Fe3O4-gamma Fe8/3O4

implications for the effect of P on intrinsic fO2 measurements of mantle-xenolith spinels.

G. S. Mattioli, B. J. Wood, I. S.E. Carmichael

Research output: Contribution to journalArticle

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Abstract

Volume-composition relations along the MgAl2O4-Fe3O4 spinel join were determined as a function of fO2, defect concentration, and T of synthesis. The partial molar volumes of Fe3O4 and gamma Fe8/3O4 components in synthetic spinels were measured by powder XRD and a volume model for MgAl2O4-gamma Fe8/3O4 ternary spinels was derived.-J.A.Z.

Original languageEnglish
Pages (from-to)468-480
Number of pages13
JournalAmerican Mineralogist
Volume72
Issue number5-6
Publication statusPublished - 1987

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