title: Millimeter scale variations in the isotopic composition of vein sulphide minerals in the Kupferschiefer deposits, Lubin area, SW Poland.
abstract: A slice of black shale rock cut by various metal sulphide veins of different generations from the Kupferschiefer deposits of Lubin, Poland was subjected to bombardment in a Laser Microprobe Combustion Reactor to produce SO2 for S-isotope analyses. The delta34S values ranged from-22 to-29 per thousand consistent with previous findings using conventional IRMS and attributable to primary generation of H2S by bacterial sulphate reduction. Systematic trends in delta34S values of a few per mil over distances of the order of mm attest to low temperatures of mineralization with accompanying change in the isotope composition of the fluids due to kinetic or equilibrium isotope fractionation.
authors.affiliation: Department of Physics and Astronomy, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada.
authors.forename: H Roy
authors.initials: HR
authors.lastname: Krouse
authors.forename: Jan
authors.initials: J
authors.lastname: Parafiniuk
authors.forename: Jaroslaw
authors.initials: J
authors.lastname: Nowak
authors.forename: Stanislaw
authors.initials: S
authors.lastname: Halas
mesh_terms: D003300:Copper / Q000737:chemistry; D019015:Geologic Sediments / Q000032:analysis; D006862:Hydrogen Sulfide / Q000737:chemistry; D007700:Kinetics; D008903:Minerals / Q000737:chemistry*; D010084:Oxidation-Reduction; D011044:Poland; D013431:Sulfates / Q000737:chemistry; D013440:Sulfides / Q000032:analysis; D013458:Sulfur Dioxide / Q000737:chemistry; D013460:Sulfur Isotopes; D013696:Temperature
chemical_list: D008903:Minerals; D013431:Sulfates; D013440:Sulfides; D013460:Sulfur Isotopes; D013458:Sulfur Dioxide; D003300:Copper; D006862:Hydrogen Sulfide