... in form , so it gets the name vermiculite 2.Raw ermiculite consists of silver and gold vermiculite classified into ... diffrent size Raw golden vermiculite 0-30um,0.3-0.65mm,0 ... 5mm,1-2mm,2-4mm,3-8mm,4-8mm, Raw silver vermiculite 0.25-0.7mm,0.3-1mm, ... size ,we can do as client's demands 3.Raw vermiculite chemicals analysis Composition SiO2 MgO Al2O3 Fe2O3 CaO ...