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  • Thermal decomposition of glauconite in air was studied by optical microscopy, thermal analysis, X-ray diffraction and Mössbauer spectroscopy. The glauconite structure keeps preserved during thermal treatment up to 800°C; however, simultaneously, a progressive transformation of Fe2+ and Fe 3+ ions in glauconite structure and water leaving the crystal structure are both observed inducing the symmetry lowering of the iron octahedral positions. The destruction of glauconite structure begins after heating at 900°C and becomes more intensive with an increase in the treatment temperature. Simultaneously, with the glauconite structure destruction, iron leaving the glauconite structure oxidizes to γ-Fe2O3, which transforms to α-Fe2O3.
  • Thermal decomposition of glauconite in air was studied by optical microscopy, thermal analysis, X-ray diffraction and Mössbauer spectroscopy. The glauconite structure keeps preserved during thermal treatment up to 800°C; however, simultaneously, a progressive transformation of Fe2+ and Fe 3+ ions in glauconite structure and water leaving the crystal structure are both observed inducing the symmetry lowering of the iron octahedral positions. The destruction of glauconite structure begins after heating at 900°C and becomes more intensive with an increase in the treatment temperature. Simultaneously, with the glauconite structure destruction, iron leaving the glauconite structure oxidizes to γ-Fe2O3, which transforms to α-Fe2O3. (en)
Title
  • Mössbauer Study of Transformation of Fe Cations during Thermal Treatment of Glauconite in Air
  • Mössbauer Study of Transformation of Fe Cations during Thermal Treatment of Glauconite in Air (en)
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  • Mössbauer Study of Transformation of Fe Cations during Thermal Treatment of Glauconite in Air
  • Mössbauer Study of Transformation of Fe Cations during Thermal Treatment of Glauconite in Air (en)
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  • RIV/68145535:_____/12:00383700!RIV13-AV0-68145535
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  • 151871
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  • RIV/68145535:_____/12:00383700
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  • glauconite; thermal decomposition; maghemite; Mössbauer spectroscopy (en)
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  • [A686E8854FA5]
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  • Mössbauer spectroscopy in materials science - 2012 : proceedings of the International Conference MSMS-12, Olomouc, Czech Republic, 11-15 June 2012
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  • Ščučka, Jiří
  • Martinec, Petr
  • Mašláň, M.
  • Kašlík, J.
  • Kovářová, E.
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number of pages
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  • 10.1063/1.4759486
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  • American Institute of Physics
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  • 978-0-7354-1101-2
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