The isotopic ratios S33/S32, S34/S32, and S36, S32 of the different forms of sulfur in a number of meteorites have been studied. The results obtained indicate that chemical fractionation processes have occurred in some meteorites but that the isotopic composition of the total sulfur is remarkably constant from meteorite to meteorite. Variations in the S33, S34, and S36 abundances and the relationship between them indicate isotopic fractionation in chemical and physical processes. There is no evidence of variations due to inhomogeneities in the processes of nucleosynthesis.

No abstract

No abstract

No abstract

Isotopic analysis of sulfur in the iron phase of a number of meteorites has shown the presence of cosmic-ray-produced spallation S 3ø and S øn. The Clark County meteorite sample yielded about 6 X 10-%g/g of Ssr • and about 3 X 10 -4 •g/g of SspOo; samples from the Pition and Tlacotepec meteorites yielded about 8 X 10 -ø •g/g of Ssp •ø and about 2 X 10 -• •g/g of S • Spallation sulfur in the Carbo meteorite was diluted considerably by larger quantities of k. sp .