The role of S in the evolution of the parental cores of the iron meteorites

Details The role of S in the evolution of the parental cores of the iron meteorites The role of S in the evolution of the parental cores of the iron meteorites

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.2419k&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 46, Dec. 1982, p. 2419-2426. Research supported by the Fonds zur Foerderung der Wissensch

Computer Science

16

Cosmochemistry, Iron Meteorites, Meteoritic Composition, Sulfur, Abundance, Chemical Fractionation, Crystallization, Iron, Melting, Nickel, Solar Corona, Solubility

Scientific paper

The S contents of iron meteorite parent bodies are estimated on the basis of cosmochemical relationships to undifferentiated meteorites, the results are compared to observations on the major magmatic iron meteorite groups, and evidence is presented that S/Ni ratios in their parent melts were much lower than those inferred for the parent body. Several alternative models to account for the discrepancy are offered, including volatilization of S from the IIAB parent body, liquid immiscibility, and metastable liquid layers produced by episodic melting. Finally, the fate of the S-rich meteoroidal material is discussed, as well as the question of why it seems to be missing from meteorite collections.

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