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Evidence for loss of protons and octahedral iron from oxidized biotites and vermiculites

Published online by Cambridge University Press:  05 July 2018

V. C. Farmer ,
J. D. Russell ,
W. J. McHardy ,
A. C. D. Newman ,
J. L. Ahlrichs  and
J. Y. H. Rimsaite
V. C. Farmer
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, Scotland
J. D. Russell
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, Scotland
W. J. McHardy
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen, Scotland
A. C. D. Newman
Affiliation:
Pedology Department, Rothamsted Experimental Station, Harpenden, Herts.
J. L. Ahlrichs
Affiliation:
Purdue University, Lafayette, Indiana, U.S.A.
J. Y. H. Rimsaite
Affiliation:
Geology Survey of Canada, Ottawa, Canada
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Summary

Infra-red examination of a weathered biotite and of biotites that have been converted to vermiculites and subsequently oxidized, indicates that oxidation of octahedral ferrous ions to ferric ions is associated with a reversible conversion of hydroxyl ions to oxide ions. Subsequently, in high-iron biotites, there is an irreversible loss of ferric ions from the octahedral layer, resulting in an increased number of dioctahedral sites. Electron microscopy and X-ray diffraction indicate that ejected ferric ions form either amorphous interlayer oxides or, when bromine is used as an oxidant, a crystalline external phase of β-FeOOH. The high refractive index of some oxidized vermiculites is shown to be due largely to submicroscopic iron oxides.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 294 , June 1971 , pp. 121 - 137
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2013

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References

Addison, (C.C.), Addison, (W.E.), Neal, (G.H.), and Sharp, (J.H.), 1962. Journ. Chem. Soc. 1468.CrossRefGoogle Scholar
Barshao, (I.) and Kishk, (J.M.), 1968. Science, 162, 1401.CrossRefGoogle Scholar
Basolo, (F.) and Pearson, (R.G.), 1967. Mechanisms of Inorganic Reactions, 2nd edn. New York (Wiley).Google Scholar
Farmer, (V.C.) and Russell, (J.D.), 1964. Spectrochim. Acta, 20, 1149.CrossRefGoogle Scholar
Farmer, (V.C.) and Russell, (J.D.), 1966. Ibid. 22, 389.Google Scholar
Farmer, (V.C.) and Russell, (J.D.), and Ahlrichs, (J.L.), 1968.9th Int. Congr. Soil Sei., Adelaide, Australia, 3, IOI. and Velde, (B.), 1967. Bull. Groupe franç. Argiles, 19 (2), 5.CrossRefGoogle Scholar
Fripiat, (J.J.), Rouxhet, (P.), and Jacobs, (H.), 1965. Amer. Min. 50, 1937.Google Scholar
Hellner, (E.) and Euler, (R.), 1957. Geochim. Acta. 12, 47.CrossRefGoogle Scholar
Hodgson, (A.A.), Freeman, (A.G.), and Taylor, (H. F. W.), 1965a. Min. Mag. 35, 445.Google Scholar
Hodgson, (A.A.), Freeman, (A.G.), and Taylor, (H. F. W.), 1965b. Ibid. 35, 5.Google Scholar
Mehra, (O.P.) and Jackson, (M.L.), 1960. Clays Clay Min. 7, 317.CrossRefGoogle Scholar
Newman, (A. C. D.), 1967. Clay Min. 7, 215.CrossRefGoogle Scholar
Newman, (A. C. D.), and Brown, (G.), 1966. Ibid. 6, 297.Google Scholar
Pollock, (E.N.) and Micuel, (A.H.), 1967. Anal Chem. 39, 272.CrossRefGoogle Scholar
Raosell-Colom, (J.A.), Sweatman, (T.R.), Wells, (C.B.), and Norrish, (K.), 1965. In Experimental Pedology, eds. Hallsworth, E. G. and Crawforo, D. V., 40. London (Butterworth).Google Scholar
Rimsaite, (J.), 1967. Clays Clay Min. 15, 375.CrossRefGoogle Scholar
Rimsaite, (J.), 1970. Contr. Min. Petr. 25, 225.CrossRefGoogle Scholar
Roth, (C.B.), Jackson, (M.L.), OE Villiers, (J.M.), and Volk, (V.V.), 1967. In Soil Chemistry and Soil Fertility, ed. G. V. JACKS, p. 217. Trans. Meet. Comm. II & IV, int. Soc. Soil Sci., Aberdeen, 1966.Google Scholar
Sandell, (E.B.), 1959. Colorimetric Determination of Traces of Metals, 3rd edn. New York (Interscience).Google Scholar
Vedder, (W.), 1964. Amer. Min. 49, 736.Google Scholar
Vedder, (W.), and WILKINS (R. W. T.), 1969. Ibid. 54, 482.Google Scholar
Walker, (G.F.), 1949. Min. Mag. 28, 693.Google Scholar
Washington, (H.S.), 1930. The Chemical Analysis of Rocks, 4th edn. New York (Wiley).Google Scholar
Wilkins, (R. W. T.), 1967. Min. Mag. 36, 325.Google Scholar
Wilson, (M.J.), 1970. Clay Min. 8, 291.CrossRefGoogle Scholar
Wones, (D.R.), 1963. Amer. Min. 48, 1300.Google Scholar