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A mechanism for the oxidation of ferrous iron in hydroxylated silicates

Published online by Cambridge University Press:  14 March 2018

W. E. Addison  and
J. H. Sharp
W. E. Addison
Affiliation:
Chemistry Department, The University, Nottingham
J. H. Sharp
Affiliation:
Chemistry Department, The University, Nottingham
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Abstract

A theoretical mechanism for the oxidation of ferrous iron in hydroxylated silicates is described. The reaction is represented by the general equation 4Fe2+ + 2nOH− + O2→4Fe3+ + (n + 2)O2− + nH2O, where n can vary. Oxidation occurs only at the surface of the mineral and is sustained by the migration of protons and electrons through the crystal. Non-oxidizable ions, such as Mg2+, and water formed during oxidation inhibit the reaction. The experimental evidence for the theory is derived, from a study of the oxidation of amphiboles.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 5 , Issue 28 , December 1962 , pp. 73 - 79
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1962

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References

Addison, C. C., Addison, W. E., Neal, G. H., and Sharp, J. H., 1962. See., 1468.CrossRefGoogle Scholar
Addison, W. E., Neal, G. H., and Sharp, J. H., 1962. J. chem. Soc., 1472.CrossRefGoogle Scholar
Brindley, G. W., and Y'ouell, R. F., 1953. Miner. Mag., 30, 57.Google Scholar
Comeforo, J. E., Fischer, R. B., and Bradley, W. F., 1948. J. Amer. ceram. Soc., 31, 254.Google Scholar
Francis, G. H., 1955. Miner. Mag., 30, 709.Google Scholar
Freeman, A., and Taylor, H. F. W., 1961. Private communication.Google Scholar
Parmelee, C. W., and Barreti', L. R., 1938. J. Amer. ceram. Soc., 21, 388.Google Scholar
Roy, R. 1949. d. Amer. ceram. Soc., 32, 202.Google Scholar
Steadman, R., and Youell, R. F., 1957. Nature, Lond., 180, 1066.Google Scholar
Willis, M. R., 1961. Private communication.Google Scholar