Abstract
Layer structures of phlogopite, vermiculite, montmorillonite, organo-montmorillonites and organo-mica/montmorillonite mixed layer mineral were studied by electron microscopy. Many dislocations were observed in the lattice images of layers of the montmorillonite flake.
Electron micrographs of the layers of some organo-montmorillonites showed regular and irregular layer expansion caused by the interlayer adsorption of the organic compunds. Some of the results exhibited local variations of layer expansion even within one particular layer. The local variation was interpreted as due to local differences in exchangeable charge density between the layers.
