I-Vermiculite iyiminerali ye-silicate, okuyi-mica sub-organism.Ukwakheka kwayo kwamakhemikhali okuyinhloko: 22MgO · 5Al2O3 · Fe2O3 · 22SiO2 · 40H2O I-formula ye-theoretical ye-molecular ngemva kokugazinga nokunwetshwa: ( OH) 2 (MgFe) 2 · (SiAlFe) 4O104H2O
I-ore vermiculite yasekuqaleni iyisakhiwo esinezingqimba esinamanzi amancane phakathi kwezingqimba.Ngemuva kokushisa ku-900-950 ℃, ingaphelelwa amanzi, iqhume futhi inwetshwe ibe izikhathi ezi-4-15 ivolumu yasekuqaleni, yakha i-porous light body material.Inokufakwa kwe-thermal, ukumelana nokushisa okuphezulu, ukufakwa kwe-insulation, i-antifreeze, ukumelana nokuzamazama komhlaba, ukumelana nokugqwala kwe-asidi ne-alkali, ukufakwa komsindo nezinye izakhiwo.