Abstract
THE two-dimensional structure of montmorillonite has been illustrated by electron micrographs of the face view of the plates1–3. We report what we believe to be the first micrograph to be published of the edge view of the unit layers of montmorillonite. In Fig. 1 the plates appear to be supported at an angle to the supporting film; the dark parallel lines, which are 10 Å ± 2 Å, are the unit layers of montmorillonite. This is in agreement with X-ray data which give the unit layer thickness as approximately 10 Å. It is interesting to note that the lines appear in groups of three or four.
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References
van Olphen, H., in An Introduction to Clay Colloid Chemistry (Interscience, 1963).
Corbet, H. C., and Wolffes, J., Proc. Stockholm Conf. on Elect. Microsc., 334 (1956).
Bates, T. F., and Comer, J. J., Proc. of the Third Nat. Conf. on Clay and Clay Min., Publ. 395, 1 (1955).
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BARCLAY, L., THOMPSON, D. Electron Microscopy of Sodium Montmorillonite. Nature 222, 263 (1969). https://doi.org/10.1038/222263a0
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DOI: https://doi.org/10.1038/222263a0
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