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The Coordination of Aluminum Ions in the Palygorskite Structure

Published online by Cambridge University Press:  28 February 2024

Necip Güven ,
Jean-Baptiste d'Espinose de la Caillerie  and
Jose J. Fripiat
Necip Güven
Affiliation:
Department of Geosciences, Texas Tech University, P.O. Box 4109, Lubbock, Texas 79409
Jean-Baptiste d'Espinose de la Caillerie
Affiliation:
Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201
Jose J. Fripiat
Affiliation:
Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201
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Abstract

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NMR spectra of PF1-1 Floridan palygorskite strongly suggest that Al3+ occurs only in octahedral coordination. X-ray microanalysis of the palygorskite fibers indicate a chemical composition defined by the atomic ratios: Mg/Si = 0.34, Al/Si = 0.27, and Fe/Si = 0.04. Considering the NMR and CEC data in this report along with the previously published results of IR and Mössbauer spectroscopic studies, the following structural formula is proposed for PF1-1 palygorskite:

$${\rm{(M{g_{2.12}}A{l_{1.68}}F{e^{3 + }}_{0.24}{\square _{0.96}})S{i_8}{O_{20}}{(OH)_2}{(O{H_2})_4}}}$$
where □ represents the vacant Ml octahedral sites in the structure, and Al3+ and Fe3+ are all exclusively assigned to the octahedral sites.

Keywords

Al-coordinationMAS-NMRPalygorskite
Type
Research Article
Information
Clays and Clay Minerals , Volume 40 , Issue 4 , August 1992 , pp. 457 - 461
Copyright
Copyright © 1992, The Clay Minerals Society

References

Abudelgawad, G., Viani, B. E. and Dixon, J. B., 1985 Palygorskite separation from dodecylammonium-treated clays Clays & Clay Minerals 33 438 – 442 10.1346/CCMN.1985.0330510.CrossRefGoogle Scholar
Bailey, S. W., Brindley, G. W. and Brown, G., 1980 Structures of layer silicates Crystal Structures of Clay Minerals and Their X-ray Identification London Mineralogical Society 2 – 123.Google Scholar
Bradley, W. D., 1940 The structural scheme of attapulgite Amer. Mineral 25 405 – 410.Google Scholar
Drits, V. A. and Sokolova, G. V., 1971 Structure of palygorskite Soviet Phys. Crystallogr 16 183 – 185.Google Scholar
Heller-Kallai, L. and Rozenson, I., 1981 Mössbauer studies of palygorskite and some aspects of palygorskite mineralogy Clays & Clay Minerals 29 226 – 232 10.1346/CCMN.1981.0290309.CrossRefGoogle Scholar
Jones, B. I. and Galan, E., 1988 Sepiolite and palygorskite: in Hydrous Phyllosilicates 19 631 – 674 10.1515/9781501508998-021.CrossRefGoogle Scholar
Mehra, O. P. and Jackson, M. L., 1960 Iron oxide removal from soils and clays by a dithionite-citrate system buffered by sodium bicarbonate Proc. 7th Conf. Nat. Acad. Sci. Natl. Res. Council Publ., Clays & Clay Minerals 317 – 327.CrossRefGoogle Scholar
Newman, A C D Brown, G. and Newman, A. C. D., 1987 The chemical constitution of clays Chemistry of Clays and Clay Minerals London Mineralogical Society 2 – 128.Google Scholar
Paquet, H., Duplay, J., Valleron-Blanc, M., Millot, G., Schultz, L. G., van Olphen, H. and Mumpton, F. A., 1987 Octahedral composition of individual particles in smectite-palygorskite and smectite-sepiolite assemblages Proc. Inter. Clay Conf. 1985 Bloomington, Indiana Clay Minerals Society 73 – 77.Google Scholar
Samoson, A., 1985 Satellite transition high-resolution NMR of quadrupole nuclei in powders Chem. Phys. Lett 119 29 – 32 10.1016/0009-2614(85)85414-2.CrossRefGoogle Scholar
Serna, C., van Scoyoc, G. E. and Ahlrichs, J. L., 1977 Hydroxyl groups and water in palygorskite Amer. Mineral 62 784 – 792.Google Scholar
Singer, A., Dixon, J. B. and Weed, S. B., 1989 Palygorskite and sepiolite group minerals Minerals in Soil Environments Madison Soil Science Society of America 829 – 872.Google Scholar
Smith, D. and Norem, D., 1986 The electron-microprobe analysis of palygorskite Can. Mineral 24 499 – 511.Google Scholar
van Olphen, H. and Fripiat, J. J., 1979 Data Handbook for Clay Materials and Other Non-Metallic Minerals Oxford, England Pergamon Press.Google Scholar
Weaver, C. E. and Pollard, L. D., 1979 The Chemistry of Clay Minerals .Google Scholar
Woessner, D. E., 1989 Characterization of clay minerals by 27Al nuclear magnetic resonance spectroscopy Amer. Mineral 74 203 – 215.Google Scholar