The partition of nickel between olivine, magma and immiscible sulfide liquid

Michael E. Fleet, Neil D. MacRae, Margery D. Osborne

Research output: Contribution to journalArticle

Abstract

The Ni contents of glasses in products of earlier experiments on the Ni partition between olivine and immiscible sulfide liquid have been determined, allowing the distribution coefficients for Ni Fe2+ exchange between sulfide and silicate (KD 1), and olivine and silicate (KD 2) to be calculated. Ni is relatively enriched in S-bearing Mg-silicate liquids by complexing with dissolved S. In consequence, KD 1 and KD 2 are systematically dependent on both silicate liquid and sulfide liquid composition. The present study re-affirms the reliability of the existing Ni partition data for coexisting olivine and sulfide and, therefore, supports the earlier conclusion that an immiscible sulfide liquid cannot be a normal product of upper-mantle magmatic processes. In S-bearing systems KD 2 will be somewhat lower than the value for the corresponding S-free system, and this may account for the discrepancies between previously reported partition data.

Original languageEnglish (US)
Pages (from-to)119-127
Number of pages9
JournalChemical Geology
Volume32
Issue number1-4
DOIs
StatePublished - 1981

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

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