Sodium bentonite is a type of bentonite clay characterized by its high sodium content. It is formed from the alteration of volcanic ash deposits over time. It consists of montmorillonite, a type of smectite clay mineral, along with other minerals like quartz, feldspar, and gypsum.
Sodium bentonite has a high swelling capacity when hydrated, forming a gel-like substance. It also exhibits excellent absorbent properties and cation exchange capacity.
Sodium bentonite deposits are found in various regions worldwide, including the United States, China, India, and Turkey.
Sodium bentonite is typically mined using open-pit or underground mining methods and then processed through drying, grinding, and beneficiation.