Refining Bentonite ore (Refining montmorillonite Montmorillonite ) ore contains as far as 95-98% of montmorillonite Refining Bentonite ore (Refining montmorillonite Montmorillonite ) Montmorillonite ore contains as far as 95-98% of montmorillonite ,a little quartz and no cube limestones.Its chemical composition(%):Na2O:0.09MgO:5.24,AI2O3:16.64,SiO2:58.19,P2O5:0.02,K2O:0.10,CaO:2.83,TiO2:0.13,MnO: ...