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Mössbauer studies on some Argentinian soil: Mollisols from Bahia Blanca

  • Geology, Mineralogy, and Archeology
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Abstract

Clay fractions of a Mollisol sample as is, treated with ammonium oxalate (AO), with dithionite-citrate-bicarbonate (DCB) and with dithionite-ethilene-diamine-tetraacetic acid (D-EDTA) methods, were studied. Illite-montmorillonites together with hematites, goethites and maghemites, all of the AI-substituted and with a wide range of sizes, were identified. It is found that the AO attack extracts little iron, whereas the other two attacks extract the magnetic signal. Furthermore, the DCB attack facilitates the reduction of the Fe3+ ions, while the D-EDTA method does not. Instead, this attack extracts more clay mineral Fe ions. A comparison with large grain soil samples is made.

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Authors and Affiliations

  1. Departamento de Física, Comisión Nacional de Energía Atómica, Avda. Libertador 8250, 1429, Buenos Aires, Argentina

    C. Saragovi, F. Labenski & S. M. Duhalde

  2. Departamento de Química e Ing. Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahia Blanca, Argentina

    S. Acebal

  3. Departamento de Física, Universidad de Santiago de Chile, Casilla 307, Santiago 2, Chile

    R. Venegas

Authors
  1. C. Saragovi
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  2. F. Labenski
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  3. S. M. Duhalde
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  4. S. Acebal
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  5. R. Venegas
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Saragovi, C., Labenski, F., Duhalde, S.M. et al. Mössbauer studies on some Argentinian soil: Mollisols from Bahia Blanca. Hyperfine Interact 91, 765–769 (1994). https://doi.org/10.1007/BF02064604

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  • DOI: https://doi.org/10.1007/BF02064604

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