... gold vermiculite0-30um,0.3-0.65mm,0.65-1mm 20-40mesh,10-40mesh, ,0.3-1mm1.5- ... 8mm,4-8mm, Raw silver vermiculite0.25-0.7mm,0.3-1mm,1-2mm,2-4mm,3 ... -resitantwater-absorbable500-650liter/m3Thermal Conductivity0.063 - 0.069w/m °CUnder ambient conditionsExpansion ratio of ... Vermiculite chemicalsCompositionSiO2MgOAl2O3Fe2O3CaOK2OphPercentage37-4211-239-173.5-181-25-87-11The chemical analysis of both crude ...