PERLITE is a volcanic material. After thermal treatment its structure and appearance resembles popcorn, and in terms of chemical compound it is similar to glass. Porous structure of perlite determines its perfect insulation properties. VERMICULITE consists of thin, shiny plates of goldish colour and after annealing its structure resembles small, expanded harmonics. It characterises with low bulk density, good insulation property and fire resistance...
About perlite About vermiculite
