Abstract
THE frequency with which vermiculitic and chloritic minerals as well as montmorillonites probably occur in soil-clays makes it necessary to have a clear-cut method for distinguishing them. The similarity of their X-ray powder diffraction patterns renders certain identification practically impossible without some prior treatment of the clay, especially if more than one of them is present in a given sample. Identification can, however, be made relatively easy by observing the variation in the position of the strong basal line, which normally occurs at about 14 A. on the diffraction patterns of all three minerals, after various treatments.
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References
MacEwan, D. M. C., Nature, 154, 577 (1944); J. Soc. Chem. Indust., 65, 298 (1946).
Walker, G. F., [Nature, 163, 762 (1949)].
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WALKER, G. Distinction of Vermiculite, Chlorite and Montmorillonite in Clays. Nature 164, 577–578 (1949). https://doi.org/10.1038/164577b0
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DOI: https://doi.org/10.1038/164577b0
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