Breaking of Henry's law for sulfide liquid-basaltic melt partitioning of Pt and Pd.

ABSTRACT: Platinum group elements are invaluable tracers for planetary accretion and differentiation and the formation of PGE sulfide deposits. Previous laboratory determinations of the sulfide liquid-basaltic melt partition coefficients of PGE ([Formula: see text]) yielded values of 10²-10⁹, and values of >10⁵ have been accepted by the geochemical and cosmochemical society. Here we perform measurements of [Formula: see text] at 1 GPa and 1,400 °C, and find that [Formula: see text] increase respectively from 3,500 to 3.5 × 10⁵ and 1,800 to 7 × 10⁵, as the Pt and Pd concentration in the sulfide liquid increases from 60 to 21,000 ppm and 26 to 7,000 ppm, respectively, implying non-Henrian behavior of the Pt and Pd partitioning. The use of [Formula

SUBMITTER: Zhang M 

PROVIDER: S-EPMC8514440 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature