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Sulfide sulfur isotope values and iron speciation data are reported here for sediments from the 2.0 Ga old Pilgujärvi Sedimentary Formation, Pechenga Greenstone Belt, NW Russia. Sulfides are abundant throughout the c. 1400m thick turbiditic sandstone-siltstone-shale succession and present as pyrite and pyrrhotite. A stratigraphic trend is discernible with respect to sulfide mineralogy and sulfur isotopic...
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