Experiments on the simultaneous partitioning of divalent metal ions between sphalerite or garnet and 2M aqueous chloride solutions under supercritical conditions

Etsuo Uchida, Michiyuki Fukuma, Fumitoshi Sato, Sho Endo

    Research output: Contribution to journalArticle

    Abstract

    Experiments on the simultaneous partitioning of divalent metal ions were performed in the systems (1) ZnS (sphalerite)-(Ni2+, Co2+, Fe2+, Mn2+, Cd2+)C12-H2O and (2) Mn3Al2Si3O12 (spessartine)-(Ni2+, Mg2+, Co2+, Zn2+, Fe2+, Ca2+)C12-H2O in the temperature range of 500 to 800°C at 1 kb. In the former system for ion partitioning in the 4-fold coordination, parabola-shaped PC-IR curves with a peak near Zn2+ were obtained and no anomaly was observed for Zn2+ and Ni2+ but Cd2+. In the latter system for ion partitioning in the 8-fold coordination, parabola-shaped PC-IR curves with a peak near Mn2+ were obtained, but Zn2+ deviates from such a trend and tends to concentrate into aqueous chloride solutions. The PC-IR curves for spessartine are gentle compared with those for sphalerite. The PC-IR curves both for spessartine and sphalerite become gentle with increasing temperature.

    Original languageEnglish
    Pages (from-to)151-162
    Number of pages12
    JournalJapanese Magazine of Mineralogical and Petrological Sciences
    Volume33
    Issue number4
    DOIs
    Publication statusPublished - 2004

    Keywords

    • Aqueous chloride solution
    • Garnet
    • Partition coefficient
    • Spessartine
    • Sphalerite
    • Supercritical condition

    ASJC Scopus subject areas

    • Geochemistry and Petrology
    • Economic Geology

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