Hostname: page-component-7bb8b95d7b-wpx69 Total loading time: 0 Render date: 2024-09-20T10:48:35.319Z Has data issue: false hasContentIssue false
  • English
  • Français

Montmorillonite-Alkali Halide Interaction: A Possible Mechanism for Illitization

Published online by Cambridge University Press:  01 July 2024

L. Heller-Kallai
L. Heller-Kallai*
Affiliation:
Department of Geology, The Hebrew University of Jerusalem, Israel
Get access Rights & Permissions [Opens in a new window]

Abstract

The reaction products obtained when montmorillonites react with potassium halide at elevated temperatures, which were described in a previous publication, are further characterized. On the basis of their X-ray powder diffraction patterns, i.r. spectra, CEC and chemical composition they could be regarded as montmorillonite-illite interstratifications. Changes in morphology of various montmorillonites heated with and without K halide are related to the size, charge and position of interlayer cations. Scanning electron-micrographs of samples heated with KBr resemble those of well-crystallized illite. It is speculated that reactions of clay minerals with halides or other proton acceptors may account for some diagenetic processes in nature, e.g. the conversion of montmorillonite to illite on deep burial.

Type
Research Article
Information
Clays and Clay Minerals , Volume 23 , Issue 6 , December 1975 , pp. 462 - 467
Copyright
Copyright © 1975, The Clay Minerals Society

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

Bentor, Y. K., (1966) The Clays of Israel 39–41.Google Scholar
Borst, R. L. and Keller, W. D., (1969) Scanning electron micrographs of API reference clay minerals and other selected samples 1 871–901.Google Scholar
Farmer, V. C. and Russell, J. D., (1964) The i.r. spectra of layer silicates Spectrochim. Acta 20 1149–1173.CrossRefGoogle Scholar
Fripiat, J. J. Rouxhet, P. and Jacobs, H., (1965) Proton derealization of micas Am. Minera. 50 1937–1958.Google Scholar
Heller-Kallai, L., (1975) Interaction of montmorillonite with alkali halide .Google Scholar
Hunt, J. W., (1950) Infra-red spectra of Reference Clay Minerals 109.Google Scholar
Pollard, C. O., (1971) Semidisplacive mechanism for diagenetic alteration of montmorillonite layers to illite layers Geol. Soc. Am. Special Paper 134 79–93.CrossRefGoogle Scholar
Powers, M. C., (1959) Adjustment of clays to chemical change and the concept of the equivalence level 327–341.Google Scholar
Rosenquist, I. Th., (1959) Montmorillonite fra Skyrvedalen i Hemsedal Norsk. Geol. Tidsskr. 39 350–354.Google Scholar
Ross, C. S. and Hendricks, S. B., (1945) Minerals of the Montmorillonite Group US Geol. Surv. Prof. Paper 205–208.Google Scholar
Russell, J. D. and Farmer, V. C., (1964) Infra-red spectroscopic study of the dehydration of montmorimonite and saponite Clay Minerals 5 443–464.CrossRefGoogle Scholar
Weaver, C. E., (1967) Potassium, illite and the ocean Geochim. Cosmochim. Acta 31 2181–2196.CrossRefGoogle Scholar
Weaver, C. E. and Beck, K. C., (1971) Clay water diagenesis during burial: How mud becomes gneiss Geol. Soc. Am. Special Paper 134 1–78.CrossRefGoogle Scholar