FTIR investigation of the evolution of the octahedral sheet of kaolinite-smectite with progressive kaolinization
- Cuadros, Javier
- Dudek, Teresa
DOIAbstract
Twenty two samples were studied to in gate the nature and evolution mechanism of mixed-layer kaolinite-smectite (K-S). We examined the <2 μ or <0.2 μm fraction of K-S formed by hydrothermal and hypergenic alteration of volcanic material. The samples are from three localities: 20 specimens from a Tortonian clay deposit in Almeria, Spain; one specimen from weathered Eocene volcanic ash from the Yucatan Peninsula, Mexico; and one sample from a weathered Jurassic bentonite from Northamptonshire, England. The samples were studied using chemical analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The XRD patterns of the oriented, glycolated mounts were modeled using NEWMOD and the proportion of smectite and kaoli...
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