Computer Science
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.2671g&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 55, Sept. 1991, p. 2671-2679.
Computer Science
26
Iron Alloys, Iron Meteorites, Meteoritic Composition, Schreibersite, Sulfur Isotopes, Troilite, Chondrites, Evaporation, Fractionation, Metal Compounds
Scientific paper
The paper concentrates on isotopic measurements of sulfur in different sulfur-carrier phases: troilite inclusions, Fe-Ni alloy, and schreibersite (possibly including daubreelite). Variations in S-34 isotope ratio are observed in some troilite inclusions, and no evidence of nucleosynthetic sulfur isotopic anomalies are found in the troilite inclusions. Excesses of S-33 and S-36 are observed in both FeNi alloy and schreibersite of Grant, Santa Clara, Tlacotepec, and Gibeon, with schreibersite possessing the greater magnitude of presumably spallogenic S-33 and S-36. It is concluded that the magnitude of the observed fractionation is consistent with troilite dissociation and/or vaporization following a collisional impact.
Gao Xia
Thiemens Mark H.
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