Abstract
Twenty meteorites were studied in the iron (hexahedrites and octahedrites) and stony (enstatite achondrite, carbonaceous, enstatite, bronzite and hypersthene chondrites) families. Troilite is the chief sulfur component of iron meteorites and the δS 34 ranges from 0 to + 0.6‰ with respect to Canyon Diablo troilite. Stony meteorites contain a wide variety of sulfur compounds including water and acid soluble sulfides, elemental sulfur, water and acid soluble sulfates and unidentified components soluble only in aqua regia. The δS 34 content of the isolated compounds varies from +2.5 to −5.5‰ with respect to Canyon Diablo. The weighted average for all components of each meteorite, however, falls within ± 1 ‰ of Canyon Diablo. The S 33 distribution closely follows S 34. The data strongly suggest that differentiations have occurred in a closed system, corresponding to the meteorites or their parent body, and starting from a single source of sulfur. There is no evidence for biological activity having occurred in the meteorites, either from the distribution of sulfur compounds or from the isotope abundance data.
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