Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-10T13:42:56.016Z Has data issue: false hasContentIssue false
  • English
  • Français

Iron phases identified in bentonite from the Lieskovec deposit (Slovakia) by variable-temperature Mössbauer spectroscopy

Published online by Cambridge University Press:  09 July 2018

P. Komadel ,
A. S. Anastácio ,
S. Andrejkovičová  and
J. W. Stucki
P. Komadel*
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
A. S. Anastácio
Affiliation:
Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801, USA
S. Andrejkovičová
Affiliation:
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
J. W. Stucki
Affiliation:
Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, IL 61801, USA
*
*E-mail: uachkomp@savba.sk
Get access Rights & Permissions [Opens in a new window]

Abstract

The clay-mineral fraction of samples from a bentonite deposit in the Zvolenská kotlina Basin (Slovakia), formed by the alteration of andesitic pyroclastics, was dominated by Fe-bearing montmorillonite of relatively low charge. The total Fe content of the samples ranged from 3.58 to 5.81 wt.% Fe. Variable-temperature Mössbauer spectroscopy revealed that structural Fe(III) in smectite accounts for 70–90% of the total Fe in the unfractionated samples. No structural Fe(II) was observed by Mössbauer spectroscopy, but a small amount was detected by wet chemical analysis. The remainder of the Fe is present in oxide and/or oxyhydroxide phases dominated by poorly ordered goethite and hematite. The hyperfine parameters of the Mössbauer spectra for the raw bentonite are consistent with structural Fe(III) in an aluminosilicate phase mixed with varying quantities of hematite, goethite and possibly maghemite. Except in the fine fraction of sample L28, the hematite failed to undergo the Morin transition, as shown by the negative values for quadrupole splitting at 298 K and 6 K.

Keywords

variable-temperature Mössbauer spectroscopyFe-bearing smectitestructural ironhematitegoethite
Type
Research Article
Information
Clay Minerals , Volume 43 , Issue 1 , March 2008 , pp. 107 - 115
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Amonette, J.E., Khan, F.A., Gan, H., Stucki, J.W. & Scott, A.D. (1998) Comparison of oxidimetric, spectrophotometric, and Mössbauer-spectroscopic methods for determination of Fe(II) in non-refractory minerals. Pp. 277–286 in: Proceedings of the 11th International Clay Conference (Kodama, H., Mermut, A.R. & Torrance, J. K., editors). Ottawa, Canada.Google Scholar
Andrejkovicová, S., Madejová, J., Czímerová, A., Galko, I., Dohrmann, R. & Komadel, P. (2006) Mineralogy and chemistry of Fe-rich bentonite from Lieskovec deposit, Central Slovakia. Geologica Carpathica, 57, 371–378.Google Scholar
Betancur, J.D., Barrero, C.A., Greneche, J.M. & Goya, G.F. (2004) The effect of water content on the magnetic and structural properties of goethite. Journal of Alloys and Compounds, 369, 247–251.Google Scholar
Breen, C., Madejová, J. & Komadel, P. (1995) Characterisation of moderately acid-treated, sizefractionated montmorillonites using IR and MAS NMR spectroscopy and thermal analysis. Journal of Materials Chemistry, 5, 469–474.Google Scholar
Číčel, B., Komadel, P., Bednáriková, E. & Madejová, J. (1992) Mineralogical composition and distribution of Si, Al, Fe, Mg and Ca in the fine fractions of some Czech and Slovak bentonites. Geologica Carpathica, Series Clays, 43, 3–7.Google Scholar
da Costa, G.M., De Grave, E., Bowen, L.H., de Bakker, P.M.A. & Vandenberghe, R.E. (1995) Variabletemperature Mössbauer spectroscopy of nano-sized maghemite and Al-substituted maghemites. Clays and Clay Minerals, 43, 562–568.Google Scholar
Eberl, D.D. (2003) User's guide to RockJock — a program for determining quantitative mineralogy from powder X-ray diffraction data. U.S. Geological Survey, Open-File Report 03-78, 40 pp.Google Scholar
Friedl, J. & Schwertmann, U. (1996) Aluminium influence on iron oxides: XVIII. The effect of Al substitution and crystal size on magnetic hyperfine fields of natural goethites. Clay Minerals, 31, 455–464.Google Scholar
Golden, D.C., Bowen, L.H., Weed, S.B. & Bigham, J.M. (1979) Mössbauer studies of synthetic and soiloccurring aluminum-substituted goethites. Soil Science Society of America Journal, 43, 802–808.Google Scholar
Goodman, B.A., Nadeau, P.H. & Chadwick, J. (1988) Evidence for the multiphase nature of bentonites from Mössbauer and EPR spectroscopy. Clay Minerals, 23, 147–159.Google Scholar
Jeffery, P.G. & Hutchison, D. (1981) Chemical Methods of Rock Analysis. 3rd Edition. Pergamon Press, London. 375 pp.Google Scholar
Komadel, P. & Stucki, J.W. (1998) The quantitative assay of minerals for the Fe2+ and Fe3+ using 1, 10- phenanthroline. III. A rapid photochemical method. Clays and Clay Minerals, 36, 379–381.CrossRefGoogle Scholar
Komadel, P., Grygar, T. & Mehner, H. (1998) Reductive dissolution and Mössbauer spectroscopic study of Fe forms in the fine fractions of Slovak Fe-rich bentonites. Clay Minerals, 33, 593–599.CrossRefGoogle Scholar
Lear, P.R., Komadel, P. & Stucki, J.W. (1988) Mössbauer spectroscopy identification of Fe oxides in nontronite from Hohen Hagen, Federal Republic of Germany. Clays and Clay Minerals, 36, 376–378.Google Scholar
Lego, S., Morháčová, E. & Komadel, P. (1995) Distribution of Fe in the fine fractions of some Czech bentonites. Clay Minerals, 30, 157–164.Google Scholar
Madejová, J., Komadel, P. & Cíčel, B. (1992) Infrared spectra of some Czech and Slovak smectites and their correlation with structural formulas. Geologica Carpathica, Series Clays, 43, 9–12.Google Scholar
Muggler, C.C., Van Loef, J.J., Buurman, P. & van Doesburg, J.D.J. (2001) Mineralogical and submicroscopic aspects of iron oxides in polygenetic Oxisols from Minas Gerais, Brazil. Geoderma, 100, 147–171.CrossRefGoogle Scholar
Murad, E. (1987) Mössbauer spectra of nontronites: structural implications and characterization of associated Fe oxides. Zeitschrift fur Pflanzenernahrung und Bodenkunde, 150, 279–285.Google Scholar
Murad, E. (1988) Properties and behavior of iron oxides as determined by Mössbauer spectroscopy. Pp. 309–350 in: Iron in Soils and Clay Minerals, (Stucki, J.W., Goodman, B.A. & Schwertmann, U., editors). Reidel, Dordrecht, The Netherlands.Google Scholar
Murad, E. (1989) Poorly-crystalline minerals and complex mineral assemblages. Hyperfine Interactions, 47, 33–53.Google Scholar
Murad, E. (1998) Clays and clay minerals: What can Mössbauer spectroscopy do to help understand them. Hyperfine Interactions, 117, 39–70.Google Scholar
Murad, E. & Cashion, J. (2004) Iron oxides and Oxyhydroxides. P. 39 in: Mössbauer Spectroscopy of Environmental Materials and their Industrial Utilization, (Murad, E., Cashion, J., editors). Kluwer Academic Publishers, Norwell, USA.Google Scholar
Murad, E., Wagner, U., Wagner, F.E. & Hausler, W. (2002) Thermal reactions of montmorillonite: a Mössbauer study. Clay Minerals, 37, 583–590.Google Scholar
Stucki, J.W. & Anderson, W.L. (1981) The quantitative assay of minerals for Fe2+ and Fe3+ using 1, 10- phenanthroline. I. Sources of variability. Soil Science Society of America Journal, 45, 633–637.Google Scholar
Šucha, V., Kraus, I., Mosser, C., Hroncová, Z., Soboleva, K.A. & Siránová, V. (1992) Mixed-layer illite/ smectite from the Dolná Ves hydrothermal deposit, the Western Carpathian Kremnica Mts. Geologica Carpathica, Series Clays, 43, 13–19.Google Scholar
Šucha, V., Galko, I., Madejová, J. & Kraus, I. (1996) Mineralogical and crystallochemical characteristics of bentonite from Zvolenská Slatina region. Mineralia Slovaca, 28, 129–134 (in Slovak).Google Scholar
Vandenberghe, R.E., De Grave, E., Landuydt, C. & Bowen, L.H. (1990) Some aspects concerning the characterization of iron oxides and hydroxides in soils and clays. Hyperfine Interactions, 53, 175–196.CrossRefGoogle Scholar