Abstract
Mössbauer fractions f are reported for various ferrous- and/or ferric-containing oxides, hydroxides, silicates, and phosphates to extend the list previously reported by De Grave and Van Alboom (1991). The f fractions were evaluated from the experimental temperature dependencies of their center shifts, assuming the Debye model for the lattice vibrations. For most Fe2+ sites the characteristic Mössbauer or lattice temperatures ΘM are in the range 300–400 K, while those for Fe3+ sites are close to or exceed 500 K, implying significantly higher f fractions for Fe3+ than for Fe2+, in particular at room temperature. A correlation between ΘM and the coordination type, or, for a given valence state and coordination type, between ΘM and the mineral type is, however, not obvious.
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Received: 24 June 2002 / Accepted: 23 November 2002
Acknowledgements The Fund for Scientific Research, Flanders, is gratefully acknowledged for financial support. Dr. S.G. Eeckhout is Post-Doctoral Research Fellow of the Fund for Scientific Research Flanders, Belgium.
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Eeckhout, S., De Grave, E. Evaluation of ferrous and ferric Mössbauer fractions. Part II. Phys Chem Minerals 30, 142–146 (2003). https://doi.org/10.1007/s00269-003-0300-z
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DOI: https://doi.org/10.1007/s00269-003-0300-z