... -1,1-2,2-4,1.5-2.5mm 3.Expansion ratios:5.5-10times 4.Color:silver and gold 5 ... in difference size 0.3-1mm 0.5-1.5mm 1-2mm 1.5-2.5mm 2-4mm 0.3- ... 40mesh,10-40mesh, ,0.3-1mm1.5-2.5mm,1-2mm,2-4mm,3-8mm,4- ... 400mesh Raw silver vermiculite0.25-0.7mm,0.3-1mm,1-2mm,2-4mm,3-8mm,4 ... conditions5.Vermiculite chemicals CompositionSiO2MgOAl2O3Fe2O3CaOK2OphPercentage37-4211-239-173.5-181-25-87-11The chemical analysis of ...