The mechanism of the bacterial reduction of sulphate and of sulphite from isotope fractionation studies

Kemp, A. L. W.; Thode, H. G.

doi:10.1016/0016-7037(68)90088-4

Cited by 232 publications

(147 citation statements)

References 15 publications

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“…The isotopic enrichment observed in the SO 2À 4 pool can vary from 4‰ to 46‰ depending on the bacterial species involved, the supply of SO 4 , the rate of SO 4 reduction, temperature and pH (Kemp and Thode, 1968;Fritz et al, 1989;Clark and Fritz, 1997). The enrichment of 18 O during bacterial SO 4 reduction is 2.5-4 times less than that of 34 S, but the enrichment increases throughout the reaction until it plateaus (Fritz et al, 1989;Pierre, 1989).…”

Section: Seasonal Dic Contributionsmentioning

confidence: 99%

Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania, USA

Sharma

Sack

Adams

et al. 2013

Applied Geochemistry

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Editorial handling by A. Kolker a b s t r a c t Stable isotopes were used to determine the sources and fate of dissolved inorganic C (DIC) in the circumneutral pH drainage from an abandoned bituminous coal mine in western Pennsylvania. The C isotope signatures of DIC (d 13 C DIC ) were intermediate between local carbonate and organic C sources, but were higher than those of contemporaneous Pennsylvanian age groundwaters in the region. This suggests a significant contribution of C enriched in 13 C due to enhanced carbonate dissolution associated with the release of H 2 SO 4 from pyrite oxidation. The Sr isotopic signature of the drainage was similar to other regional mine waters associated with the same coal seam and reflected contributions from limestone dissolution and cation exchange with clay minerals. The relatively high d 34 S SO4 and d 18 O SO4 isotopic signatures of the mine drainage and the presence of presumptive SO 4 -reducing bacteria suggest that SO 4 reduction activity also contributes C depleted in 13 C isotope to the total DIC pool. With distance downstream from the mine portal, C isotope signatures in the drainage increased , accompanied by decreased total DIC concentrations and increased pH. These data are consistent with H 2 SO 4 dissolution of carbonate rocks, enhanced by cation exchange, and C release to the atmosphere via CO 2 outgassing.

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Section: Seasonal Dic Contributionsmentioning

confidence: 99%

Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania, USA

Sharma

Sack

Adams

et al. 2013

Applied Geochemistry

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“…Dur ing sedimentation, the seawater sulfate is general ly preserved as sulfide minerals such as pyrite through bacterial reduction (e.g., see Kemp and Thode, 1968). However, during the process of diagenesis, the possibility of thermochemical sulfate reduction by organic material has been proposed (Orr, 1974(Orr, , 1977Powell and Ma queen, 1984;Machell, 1987;Krouse et al, 1988;Tasse and Schrijiver, 1989;Leventhal, 1990).…”

Section: Introductionmentioning

confidence: 99%

Thermochemical reduction and sulfur isotopic behavior of sulfate by acetic acid in the presence of native sulfur.

Kiyosu

Krouse

1993

Geochem. J.

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“…Sulfur of sedimentary sulfides is generally considered to be derived from that of seawater sulfate (e.g., Kemp and Thode, 1968;Ohmoto and Rye, 1979;Guillemette and Williams-Jones, 1993). Assuming a reasonable difference in δ 34 S value of 15 ~ 20 ‰ between seawater sulfate and sedimentary pyrite related to biogenic reduction process of sulfate (Thode and Monster, 1965), the lowest δ 34 S value of -2.8 ‰ for pyrite from the D 3S2 corresponds to the starting seawater δ 34 S value of +12.2 +17.2 ‰.…”

Section: Resource Geology : D-s Yang M Shimizu H Shimazaki X-hmentioning

confidence: 99%

Sulfur Isotope Geochemistry of the Supergiant Xikuangshan Sb Deposit, Central Hunan, China: Constraints on Sources of Ore Constituents

Yang¹,

Shimizu

Shimazaki

et al. 2006

Resource Geology

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Abstract:The supergiant Xikuangshan Sb deposit is located in the Middle to Upper Devonian limestone of central Hunan, China. Primary ores are composed of early-stage stibnite and calcite with rare pyrite, early main-stage stibnite and quartz, and late main-stage stibnite and calcite. New sulfur isotope data reveal the clustering of δ 34 S values (+5 ~ +8 ‰) for both early and late main-stage stibnite; a single early-stage stibnite exhibits δ 34 S value (+7.5 ‰) identical to its main ore-stage counterparts and the coexisting calcite has almost unmodified carbon isotope composition (-4.4 ‰). The data suggest a probable common source of sulfur for stibnite that was deposited at different paragenetic stages. A much wider variation in δ 34 S values for early main-stage stibnite (+3.5 to +16.3 ‰, av. +7.5 ‰) compared to that for late main-stage stibnite (+5.3 to +8.1 ‰, av. +6.2 ‰) can be interpreted to be due to local interaction of earlier ore fluid with Devonian host rocks. The previous studies show that the Precambrian basement contains elevated Sb concentrations, and two distinctive sulfur reservoirs with δ 34 S pyrite values at ca. +11 ~ +24 ‰ and -7.0 ~ -11 ‰. The homogenizing effect for sulfur hydrothermally leached from the two reservoirs might have provided ore constituents for the Xikuangshan fluids.

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The mechanism of the bacterial reduction of sulphate and of sulphite from isotope fractionation studies

Cited by 232 publications

References 15 publications

Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania, USA

Isotopic evidence of enhanced carbonate dissolution at a coal mine drainage site in Allegheny County, Pennsylvania, USA

Thermochemical reduction and sulfur isotopic behavior of sulfate by acetic acid in the presence of native sulfur.

Sulfur Isotope Geochemistry of the Supergiant Xikuangshan Sb Deposit, Central Hunan, China: Constraints on Sources of Ore Constituents

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