Abstract

Sulfur is the 14th most abundant element in the Earth’s crust and can exist in redox states from -2 to +6 (Table 20.1). Inorganic sulfur occurs most commonly in the -2, -1, 0, and +6 oxidation states, represented by suldes (e.g., HS-/ H2S and pyrite, FeS2), elemental sulfur (S0), and sulfate (SO42-), respectively (Roy and Trudinger, 1970). The dominant forms of sulfur in the geologic record are base-metal sulde minerals (i.e., particularly pyrite) and sulfates, preserved both in sulfate evaporite minerals (gypsum and anhydrite) (Holser, 1997) and as carbonate-associated sulfate, where sulfate substitutes into the carbonate mineral lattice at ~100 to 1000 ppm levels (Burdett et al., 1989).

Original languageEnglish
Title of host publicationEhrlich's Geomicrobiology, Sixth Edition
PublisherCRC Press
Pages479-516
Number of pages38
ISBN (Electronic)9781466592414
ISBN (Print)9781466592407
DOIs
StatePublished - Jan 1 2015

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