Experiments on the simultaneous partitioning of divalent metal ions between talc or chlorite and 2M aqueous chloride solution under supercritical conditions

Etsuo Uchida, Koichi Maruo

Research output: Contribution to journalArticle

Abstract

The simultaneous partitioning of the divalent cations of Ni2+, Mg2+, Co2+, Zn2+ , Fe2+ Mn2+ and Ca2+ between talc or chlorite (clinochlore) and 2M aqueous chloride solutions was investigated experimentally in the temperature range of 500 to 700 °C, 1 kbar. The PC-IR curves both for talc and chlorite have a peak near Mg2+. Zn2+ shows a negative deviation as with other minerals with an octahedral site. Co2+ also shows a negative deviation, and the deviation seems to be related to polymerization Of SiO4 tetrahedra. On the other hand, Ni2+ shows a positive deviation, and the deviation seems to decrease with increasing temperature.

Original languageEnglish
Pages (from-to)101-110
Number of pages10
JournalJapanese Magazine of Mineralogical and Petrological Sciences
Volume36
Issue number4
DOIs
Publication statusPublished - 2007 Dec 14

Keywords

  • Aqueous chloride solution
  • Chlorite
  • PC-IR diagram
  • Partition coefficient
  • Supercritical condition
  • Talc

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Economic Geology

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