抄録
Particle association between imogolite and some other clay minerals in aqueous suspension was investigated by electron microscopy using a freeze etching technique. Electron micrographs of the mixtures of montmorillonite-imogolite and allophane-imogolite in slightly acidic media revealed the association between imogolite and montmorillonite or allophane.The fine morphological feature of kaolinite-imogolite mixtures suggests that imogolite associates with kaolinite in acidic and alkaline media.The fine morphological features of the mixtures of imogolite and other clay minerals are discussed in relation to their electrophoretic behavior reported in the preceding paper.