... 3-1mm 0.5-1.5mm 1-2mm 1.5-2.5mm 2-4mm 0.3-0.6mm ) with 5.5-10times ... liking a leech pattern in form , so it gets the name vermiculite.2.Raw Vermiculite color :silver and golden 3.Raw Vermiculite ... silver vermiculite0.25-0.7mm,0.3-1mm,1-2mm,2-4mm,3-8mm,4-8mm,20-40mesh,40-60mesh ... -11The chemical analysis of both crude and exfoliated vermiculite is the same. 6.Usage : Our raw vermiculite are used in ...