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Quantification Curves for the X-Ray Powder Diffraction Analysis of Mixed-Layer Kaolinite/Smectite

Published online by Cambridge University Press:  02 April 2024

Katsutoshi Tomita
Affiliation:
Institute of Earth Sciences, Faculty of Science, Kagoshima University, Kagoshima, 890, Japan
Hidewo Takahashi
Affiliation:
Department of Geology, Faculty of Education, Kagoshima University, Kagoshima, 890, Japan
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Abstract

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X-ray powder diffraction patterns for many interstratified kaolinite/glycolated smectites were calculated by changing combinations of probabilities and transition probabilities of two component layers. Reichweite = 0 and Reichweite = 1 structures were investigated. The calculated d-values were plotted, with PKS (the probability that a smectite layer succeeds a kaolin layer given that the first layer is a kaolinite layer) and PSK as the axes of coordinates. These d-values were then linked into equal d-value curves on a graph. Four equal d-value diagrams for mixed reflections ranging from 34.0 to 17.1 Å, from 8.5 to 7.2 Å, from 6.13 to 5.68 Å, and from 3.540 to 3.401 Å were constructed. Two examples of identifying natural kaolinite/smectite minerals using these diagrams are presented.

Type
Research Article
Copyright
Copyright © 1986, The Clay Minerals Society

References

Akai, J., 1974 Some examples of weathering product of montmorillonite J. Mineral. Soc. Japan 11 8792.Google Scholar
Altschuler, Z. S., Dwornik, E. J. and Kramer, H., 1963 Transformation of montmorillonite to kaolinite during weathering Science 141 148152.CrossRefGoogle ScholarPubMed
Cradwick, P. D. and Wilson, M. J., 1978 Calculated X-ray diffraction curves for the interpretation of a three-component interstratified system Clay Miner. 13 5365.CrossRefGoogle Scholar
Kakinoki, J. and Komura, Y., 1965 Diffraction by a one-dimensionally disordered crystal. I. The intensity equation Acta Crystallogr. 19 137147.CrossRefGoogle Scholar
Kohyama, N. and Shimoda, S., 1974 On a few specimens called mixed layer kaolinite-montmorillonite: comparisons of observed and calculated X-ray diffraction patterns J. Mineral. Soc. Japan 11 99106.Google Scholar
Reynolds, R. C., Brindley, G. W. and Brown, G., 1980 Interstratified clay minerals Crystal Structures of Clay Minerals and Their X-ray Identification London Mineralogical Society 249303.CrossRefGoogle Scholar
Reynolds, R. C., 1983 Calculation of absolute diffraction intensities for mixed-layered clays Clays & Clay Minerals 31 233234.CrossRefGoogle Scholar
Sakharov, B. A. and Drits, V. A., 1973 Mixed-layer kaolinite-montmorillonite: a comparison of observed and calculated diffraction patterns Clays & Clay Minerals 21 1517.CrossRefGoogle Scholar
Sato, M., 1973 X-ray analysis of interstratified structure Nendo Kagaku 13 3947.Google Scholar
Sato, M. and Kizaki, Y., 1972 Structure of a 38-Å interstratified mineral, an illite-montmorillonite mixture Z. Kristallogr. 135 219231.CrossRefGoogle Scholar
Schultz, L. G., Shepard, A. D., Blackmon, P. D. and Starkey, H. C., 1971 Mixed-layer kaolinite-montmorillonite from the Yukatan Peninsula, Mexico Clays & Clay Minerals 19 137150.CrossRefGoogle Scholar
Shimoyama, A., Johns, W. D., Sudo, T. and Heller, L., 1969 Montmorillonite-kaolin clay in acid clay deposits from Japan Proc. Int. Clay Confer. Tokyo, 1969, Vol. 1 Jerusalem Israel Univ. Press 225231.Google Scholar
Środoń, J., 1980 Synthesis of mixed-layer kaolinite/smectite Clays & Clay Minerals 28 419424.CrossRefGoogle Scholar
Sudo, T. and Hayashi, H., 1956 A randomly interstratified kaolin-montmorillonite in acid clay deposists in Japan Naturelle 11151116.CrossRefGoogle Scholar
Takahashi, H., 1982 Electronic computer’s program for calculation of diffracted intensity by close-packed structures with stacking faults Bull. Fac. Educ. Kagoshima Univ. 34 114.Google Scholar
Tomita, K. and Takahashi, H., 1985 Curves for the quantification of mica/smectite and chlorite/smectite interstratifications by X-ray powder diffraction Clays & Clay Minerals 33 379390.CrossRefGoogle Scholar
Tsuzuki, Y. and Sato, M., 1974 Some structure models of kaolin/montmorillonite random mixed-layer minerals J. Mineral. Soc. Japan 11 106110.Google Scholar
Urabe, K., Udagawa, S. and Hayashi, T., 1979 Synthesis of kaolin-montmorillonite mixed layer minerals J. Mineral. Soc. Japan 14 146161.Google Scholar
Wiewiora, A., 1971 A mixed layer kaolinite-smectite from lower Silesia, Poland Clays & Clay Minerals 19 415416.CrossRefGoogle Scholar
Wiewiora, A. and Serratosa, J. M., 1973 Mixed-layer kaolinite-smectite from lower Silesia, Poland: final report Proc. Int. Clay Conf., Madrid, 1972, Vol. 1 Madrid Div. Ciencias C.S.I.C 101116.Google Scholar