Imogolite is frequently found together in main clay component.Imogolite is an aluminum silicate clay mineral with formula Al2SiO3(OH)4. The frequency at 602 cm1 is assigned for imogolite mineral and it is due to OAH deformation mode. Imogolite is present nearly 50 samples. The spectrum of Proto-imogolite has substantially the same pattern as imogolite but is more diffuse. Proto-imogolite sols can be considered as highly dispersed forms of proto-imogolite allophone. The frequencies at 680 cm1 and 854 cm1 are observed for Proto-imogolite. The frequencies at 680 cm1, 854 cm1 are due to SiAO bending mode.