For industrial uses, the Bentonite clay suppliers supply two main variety of Bentonite clay.
- Those Montmorillonite found within natural volcanic ashes that contains high level of sodium ions and expands when mixed with water are the Sodium Bentonite, which are also known as Western Bentonite.
- On the other hand, Montmorillonite which contains high amount of calcium is called Calcium Bentonite. This is not as much expansive as sodium Bentonite, but Calcium Bentonite clay has high porosity.
Bentonite Clay is also known as ‘activated clay’ because of its kinship in definite chemical reactions that are down to extreme negative charge.