... :expanded vermiculite flake 2.Size:0.3~8mm 3.Usage:fireproof,heat insulation,agriculture,friction 4.Color:golden Packaging & Delivery1. Packaging ... Specifications1.Type:expanded vermiculite flake2.Size:0.3~8mm3.Usage:fireproof,heat insulation,agriculture,friction 4.Color:golden Molecular formulaSiO2MgOAL203Fe2OSFeOK2OH2OCaOPHNameSilicon dioxideMagnesium ...