1,Bentonite is absorbent clay consisting mostly of the mineral montmorillonite 2,use:piling, foundry, ... Calcium Bentonite for various use BENTONITE INTRODUCTION: Bentonite is absorbent clay consisting mostly of the mineral montmorillonite. It is formed by ... . Wide use of Calcium Bentonite is in the field of Bleaching clay, pet litter, as an agent that cleanses the intestinal tract ...