Iron pyrites isotopes

Gautier D. L. (1987) Isotopic composition of pyrite relationship to organic matter type and iron availability in some North American Cretaceous shales. Chem. Geol. Isotope Geoset Sect 65, 293-303. 

Wilkin R. T. and Arthur M. A. (2001) Variations in pyrite texture, sulfur isotope composition, and iron systematics in the Black Sea evidence for late Pleistocene to Holocene excursions of the O2-H2S redox transition. Geochim. Cosmochim. Acta 65, 1399-1416. 

Metastable Iron Sulfides Organic Sulfur Elemental Sulfur MECHANISM OF PYRITE FORMATION. 4.1 Evidence from Experimental Studies. 4.2 Isotope Effects during Experimental Pyrite Formation. 4.3 Origin of Morphological Variations in Pyrite SULFUR DIAGENETIC PROCESSES IN MARINE SEDIMENTS. 5.1 Depth Distribution of Diagenetic Sulfur Products. 5.2 Rates of Sulfate Reduction... 

Experimental studies have demonstrated that inorganic reactions during pyrite formation produce minimal isotopic fractionation. Precipitation of iron monosulfide by reaction of H2S with an iron source results in fractionations generally less than l.5%c (Bottcher et al., 1998 Price and Shieh, 1979), and subsequent transformation of monosulfide to pyrite shows similarly small fractionations (Price and Shieh, 1979). 

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