The Solubility of CaS in Aubrite Silicate Melts

Details The Solubility of CaS in Aubrite Silicate Melts The Solubility of CaS in Aubrite Silicate Melts

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..371f&link_type=abstract

Lunar and Planetary Science, volume 27, page 371

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Aubrites, Chondrites: Enstatite, Igneous Melting, Oldhamite: Cas, Rare Earth Elements: Partitioning, Silicate Melt, Sulfur: Solubility

Scientific paper

Aubrites are thought to have formed by igneous melting of an enstatite (E) chondrite-like source material. The dynamics of this process remain poorly understood. Especially enigmatic is the presence of oldhamite (CaS) in both E chondrites and aubrites despite an aubrite depletion in FeS and Fe relative to E chondrites. This depletion probably occurred via density separation or some other physicochemical process during the igneous event. The persistence of oldhamite in aubrites suggests that the process responsible for Fe and FeS removal between the E chondrite-like source and the aubrite product was less effective with respect to oldhamite. Oldhamite, however, is generally presumed to be transferred from the protolith to aubrite via a sulfide melt or as relict grains of crystalline CaS.

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