Fe3O4 activities in Fe-Ti spinel solid solutions

A. B. Woodland, B. J. Wood

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    Abstract

    The activity of Fe3O4 in Fe3O4-Fe2TiO4 solid solutions has been experimentally determined at 800°C and 900°C at 1 atm pressure. The activity-composition relations deviate markedly from "ideal' (a = X2) behavior, requiring consideration of Fe 2+-Fe3+ order on the ulvospinel-magnetite join. We have developed a solution model that takes explicit account of order-disorder and the measured activity-composition relations. The derived interaction parameters fit our activity-composition data together with other activity and cation distribution data available in the literature over the temperature range of 800-1300°C. -Authors

    Original languageEnglish
    Pages (from-to)23-37
    Number of pages15
    JournalEuropean Journal of Mineralogy
    Volume6
    Issue number1
    Publication statusPublished - 1994

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