The possible role of sulfate-reduction kinetics in the formation of hydrothermal uranium deposits
Open-File Report
79-673
By: Charles S. Spirakis
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Abstract
As a sulfate-bearing, hydrothermal solution cools to less than about 200°C, kinetic factors prevent sulfate from entering into oxidation-reduction reactions. Consequently, the reducing effect of H2S (and other reduced species) is not balanced with the oxidizing effect of SO4= to the same extent as at higher temperatures. The result is a lower effective Eh of the system. This decrease in the effective Eh due to a slowing of the rate of sulfate reduction with cooling may be the precipitation mechanism for many types of ore deposits.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | The possible role of sulfate-reduction kinetics in the formation of hydrothermal uranium deposits |
| Series title | Open-File Report |
| Series number | 79-673 |
| DOI | 10.3133/ofr79673 |
| Year Published | 1979 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 9 p. |