Premium
On the origin of copper mineralization in the Kupferschiefer: a suIphur isotope study *
Author(s) -
Sawlowicz Zbigniew
Publication year - 1989
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.1989.tb00383.x
Subject(s) - mineralization (soil science) , copper , geology , pyrite , diagenesis , geochemistry , sulfur , stable isotope ratio , mineralogy , isotope , chemistry , soil science , physics , organic chemistry , quantum mechanics , soil water
Sulphur isotopic compositions of copper and iron sulphides (dispersed and vein mineralization) from the Polish part of the Kupferschiefer were determined and compared with data from the literature. Most of the δ 34 S values of sulphides range from about ‐40 to ‐25%, indicating sulphide precipitation during bacterial sulphate reduction in an open system which gradually chanes into a closed system. Sulphides from veins are usually enriched in 34 S compared to finely dispersed mineralization and were probably formed in a more closed system. Copper sulphides are generally a few permil heavier than pyrite. Coupled with detailed microscopical observations the isotope data suggest that the mineralization is either syngenetic or early diagenetic.