SiO2 Al2O3 Fe2O3 Na2O MgO CaO TiO2 K2O SO3 other    Loss of ignition
70.7 15.5 2.23 0.212 0.85 0.46 0.00 2.7 0.170 1.06 8.6
Table 1: The chemical composition of Sodium bentonite (%).