Skip to Main Content
Book Chapter

Redox Reactions in Hydrothermal Fluids

By
Published:
January 01, 1984

Abstract

Many elements participate in oxidation-reduction reactions in the geothermal/epithermal environment. These include C, S, H, O, N, Fe, Mn, U, W, As, Sb, Bi, Cu, Ag, Au, Te, and Sn. The first six or seven elements listed are much more abundant than the rest and they interact to buffer the redox state; the remaining (and to a large extent the most interesting economically) elements are usually much less abundant, and they only respond to the chemical environment imposed by the dominant redox systems. In this chapter we shall investigate methods of determining the oxidation state of a system, either directly by calculations based on the chemistry of geothermal gases and liquids, or indirectly by interpreting the phases and phases assemblages observed in fossil hydrothermal systems.

Redox reactions are important in such diverse areas as the corrosion and scaling of geothermal production pipes, the interaction of organic matter with fluids, the oxidation of H2s, the precipitation of native metals and pyrite and other sulfides, the destruction of sulfides by oxidation, and the disproportionation of SO2 into H2S and SO4 on cooling from high temperature.

You do not currently have access to this article.

Figures & Tables

Contents

Society of Economic Geologists Guidebook Series

Fluid-Mineral Equilibria in Hydrothermal Systems

R. W. Henley
R. W. Henley
Search for other works by this author on:
A. H. Truesdell
A. H. Truesdell
Search for other works by this author on:
P. B. Barton, Jr.
P. B. Barton, Jr.
Search for other works by this author on:
J. A. Whitney
J. A. Whitney
Search for other works by this author on:
Society of Economic Geologists
Volume
1
ISBN electronic:
9781629490083
Publication date:
January 01, 1984

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal