MöSsbauer Spectroscopy in Studying the Thermally Induced Oxidation of Fe2+ Cations in Iron-Bearing Silicate Minerals
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The oxidation mechanisms of Fe2+ in different iron-bearing minerals depend strongly on the external conditions, including the heating temperature, mineral crystal unity, pressure conditions and oxidation atmosphere. However, slight differences in the internal features (the total content of iron, distribution of iron in non-equivalent sites, chemical environment and coordination of iron) can also significantly influence the oxidation mechanism. Thus, different oxidation routes can occur depending on the structural ordering and external conditions.
KeywordsMossbauer Spectroscopy Octahedral Site Ferric Oxide Hyperfine Parameter Mossbauer Spectrum
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