The sanidine-"sanidine hydrate" reaction boundary

Pauline Thompson

    Research output: Contribution to journalArticle

    Abstract

    Potassium feldspar has been found, experimentally, to be stable at mantle pressures and temperatures. However, in the presence of water, Seki and Kennedy (1964) synthesised a hydrate phase of comparable structure to the 'barium feldspar hydrate', cymrite. A series of reversal experiments has been done on the reaction:
    KA1Si3Os + nH20 ~ KAlSi3Os.nH20 in the pressure range 2-3 GPa and temperature range 450-68~C
    Original languageEnglish
    Pages (from-to)897
    Number of pages1
    JournalMineralogical Magazine
    Volume58A
    Publication statusPublished - 1994

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