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FTIR investigation of the evolution of the octahedral sheet of kaolinite-smectite with progressive kaolinization

Published online by Cambridge University Press:  01 January 2024

Javier Cuadros  and
Teresa Dudek
Javier Cuadros*
Affiliation:
Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
Teresa Dudek*
Affiliation:
Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
*
*E-mail address of corresponding author: [email protected]
†Present address: Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, Kraków, Poland
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Abstract

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Twenty two samples were studied to investigate the nature and evolution mechanism of mixed-layer kaolinite-smectite (K-S). We examined the <2 µm or <0.2 µm fraction of K-S formed by hydrothermal and hypergenic alteration of volcanic material. The samples are from three localities: 20 specimens from a Tortonian clay deposit in Almería, Spain; one specimen from weathered Eocene volcanic ash from the Yucatan Peninsula, Mexico; and one sample from a weathered Jurassic bentonite from Northamptonshire, England. The samples were studied using chemical analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The XRD patterns of the oriented, glycolated mounts were modeled using NEWMOD and the proportion of smectite and kaolinite layers was determined, ranging between 0 and 80% kaolinite. The analysis of the OH-stretching region of the FTIR spectra at different temperatures (180–550°C) showed the progressive dehydroxylation of kaolinite domains and, perhaps, of smectite domains, but no detailed information could be obtained about the sequential OH loss in different cation environments. The abundance and short-range ordering of the octahedral cations were studied using the OH-bending bands. The chemical and FTIR-estimated octahedral cation abundances were broadly similar. Aluminum showed a tendency to mix with Fe and Mg rather than to form AlAl pairs. Al-for-Mg substitution accompanying kaolinization was evident from the increase in AlAl pairs and decrease in AlMg pairs. Iron is retained in the structure. No other octahedral cation rearrangement was observed. The intensity of the 750 cm−1 band, assigned to translational vibrations of external OH groups in a kaolinitic environment, was quantified and modeled in relation to kaolinite layer proportion. The chemical data show that there are residual interlayer cations in kaolinite domains, which, in accordance with the model mentioned above, disturb external OH-translation vibrations. These results indicate the persistence of certain chemical and structural smectite features in kaolinite domains and thus support a smectite kaolinization process via a solid-state transformation. This confirms previous XRD, thermal, chemical and NMR analyses of the same sample set.

Keywords

Cation DistributionFTIRKaolinite-smectite
Type
Research Article
Information
Clays and Clay Minerals , Volume 54 , Issue 1 , February 2006 , pp. 1 - 11
Copyright
Copyright © 2006, The Clay Minerals Society

References

Bishop, J. Murad, E. and Dyar, M.D., (2002) The influence of octahedral and tetrahedral cation substitution on the structure of smectite and serpentines as observed through infrared spectroscopy Clay Minerals 37 617–628 10.1180/0009855023740064.CrossRefGoogle Scholar
Brindley, G.W., Brindley, G.W. and Brown, G., (1980) Order-disorder in clay mineral structures Crystal Structures of Clay Minerals and their X-ray Identification London Mineralogical Society 125–196.CrossRefGoogle Scholar
Brown, G. Brindley, G.W., Brindley, G.W. and Brown, G., (1980) X-ray diffraction procedures for clay mineral identification Crystal Structures of Clay Minerals and their X-ray Identification London Mineralogical Society 305–360.CrossRefGoogle Scholar
Churchman, G.J. Slade, P.G. Self, P.G. and Janik, L.P., (1994) Nature of interstratified kaolin-smectites in some Australian soils Australian Journal of Soil Research 32 805–822 10.1071/SR9940805.CrossRefGoogle Scholar
Cuadros, J. Delgado, A. Cardenete, A. Reyes, E. and Linares, J., (1994) Kaolinite/montmorillonite resembles beidellite Clays and Clay Minerals 42 643–651 10.1346/CCMN.1994.0420517.CrossRefGoogle Scholar
Delvaux, B. Mestdagh, M.M. Vielvoye, L. and Herbillon, A.J., (1989) XRD, IR and ESR study of experimental alteration of Al-nontronite into mixed-layer kaolinite-smectite Clay Minerals 24 617–630 10.1180/claymin.1989.024.4.05.CrossRefGoogle Scholar
Delvaux, B. Herbillon, A.J. Vielvoye, L. and Mestdagh, M.M., (1990) Surface properties and clay mineralogy of hydrated halloysitic soil clays. II: Evidence for the presence of halloysite/smectite (H/Sm) mixed-layer clays Clay Minerals 25 141–160 10.1180/claymin.1990.025.2.02.CrossRefGoogle Scholar
Dudek, T. Cuadros, J. and Fiore, S., (2006) Interstratified kaolinite-smectite: nature of the layers and mechanism of smectite kaolinization American Mineralogist 91 159–170 10.2138/am.2006.1897.CrossRefGoogle Scholar
Farmer, V.C. and Farmer, V.C., (1974) The layer silicates The Infrared Spectra of Minerals London Mineralogical Society 331–363 10.1180/mono-4.15.CrossRefGoogle Scholar
Frost, R.L., (1998) Hydroxyl deformation in kaolins Clays and Clay Minerals 46 280–289 10.1346/CCMN.1998.0460307.CrossRefGoogle Scholar
Hillier, S. Price, R. and Roe, M., (2002) Mixed-layer kaolinite-smectite from the Jurassic Blisworth Clay, Northamptonshire Edinburgh, Scotland 18th General Meeting of International Mineralogical Association, 2002 165 Abstracts and Program.Google Scholar
Jackson, M.L. (1975) Soil Chemical Analysis — Advanced Course (Jackson, M., editor). University of Wisconsin, Madison, USA.Google Scholar
Linares, J., (1985) The process of bentonite formation in Cabo de Gata, Almeria, Spain Mineralogica et Petrographica Acta 29-A 17–33.Google Scholar
Madejová, J. Keèké, J. Pálková, H. and Komadel, P., (2002) Identification of components in smectite/kaolinite mixtures Clay Minerals 37 377–388 10.1180/0009855023720042.CrossRefGoogle Scholar
Reyes, E. Huertas, F. and Linares, J., (1978) [Génesis y geoquímica de las esmectitas de Andalucía (España)]. Genesis and geochemistry of the smectites of Andalucia (Spain) 1st International Congress on Bentonites Italy Sassari-Calgari 149–176.Google Scholar
Reynolds, R.C. Jr. Reynolds, R.C. III, (1996) NEWMOD: The calculation of one-dimensional X-ray diffraction patterns of mixed-layer clay minerals 8 Brook Road, Hanover, New Hampshire, USA Computer Program.Google Scholar
Russell, J.D. Fraser, A.R. and Wilson, M.J., (1994) Infrared methods Clay Mineralogy: Spectroscopic and Chemical Determinative Methods London Chapman & Hall 11–67 10.1007/978-94-011-0727-3_2.CrossRefGoogle Scholar
Schultz, L.G. Shepard, A.O. Blackmon, P.D. and Starkey, H.C., (1971) Mixed-layer kaolinite-montmorillonite from the Yucatan Peninsula, Mexico Clays and Clay Minerals 19 137–150 10.1346/CCMN.1971.0190302.CrossRefGoogle Scholar
Smith, B.F.L. and Wilson, M.J., (1994) Characterization of poorly ordered minerals by selective chemical methods Clay Mineralogy: Spectroscopic and Chemical Determinative Methods London Chapman & Hall 333–358 10.1007/978-94-011-0727-3_9.CrossRefGoogle Scholar
Środoń, J., (1980) Synthesis of mixed-layer kaolinite/smectite Clays and Clay Minerals 26 419–424 10.1346/CCMN.1980.0280603.CrossRefGoogle Scholar
Theng, B.K.G. Churchman, G.J. and Whitton, J.S., (1984) Comparison of intercalation methods for differentiating halloysite from kaolinite Clays and Clay Minerals 32 249–258 10.1346/CCMN.1984.0320402.CrossRefGoogle Scholar
Watanabe, T. Sawada, Y. Russell, J.D. McHardy, W.J. and Wilson, M.J., (1992) The conversion of montmorillonite to interstratified halloysite-smectite by weathering in the Omi acid clay deposit, Japan Clay Minerals 27 159–173 10.1180/claymin.1992.027.2.02.CrossRefGoogle Scholar