Other
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54..869c&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 54, Issue 3, pp.869-874
Other
22
Scientific paper
High temperature (1450 and 1300°C), one atmosphere trace element partitioning experiments were made in the CaO-MgO-SiO 2 -Al 2 O 3 system to investigate the chemical compatibility of Ru, Rh, and Pd in magnesium aluminate spinels coexisting with silicate melts. Spinel/melt partition coefficients indicate that Rh and Ru are highly compatible with values near 90 and 20, respectively. These high partition coefficients contrast sharply with partitioning behavior for Pd under similar conditions. Palladium is rather incompatible with partition coefficients of less than 0.02. Platinum group elements, generally considered a geochemically coherent group, may thus be fractionated with respect to one another when spinel is a magmatic phase.
Capobianco Christopher J.
Drake Michael J.
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