MaterialSpecific Gravity (g/cm³)
Talc2.5-2.8
Mica2.7-3
Kaolin2.6-2.8
Carbonate Calcium2.7-2.9
Feldspar2.5-2.7
Bentonite2.2-2.8
dolomite2.8-2.9
barite4-4.5
silica2.2-2.7