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Electron relaxation in deerite

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Abstract

The mixed valence iron silicate deerite, Fe 2+6 Fe 3+3 O3[Si6O17](OH)5 whose crystal structure has only recently been fully determined, had been previously examined by both susceptibility measurements and Mössbauer spectroscopy. We reinterpret the Mössbauer measurements from Frank and Bunbury and show that all contradictions between the phenomena, observed in their experiments, and the mineralogical structure disappear when one accepts a thermally activated electron delocalisation associated with Fe2+ ↔ Fe3+ charge transfer.

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Authors and Affiliations

  1. Faculté des Sciences, Groupe de l'Etat Solide, Université Nationale du Zaire, B.P. 190, Kinshasa XI, Zaire

    H. Pollak, R. Quartier & W. Bruyneel

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  1. H. Pollak
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  2. R. Quartier
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  3. W. Bruyneel
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Pollak, H., Quartier, R. & Bruyneel, W. Electron relaxation in deerite. Phys Chem Minerals 7, 10–14 (1981). https://doi.org/10.1007/BF00308194

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  • DOI: https://doi.org/10.1007/BF00308194

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