Montmorillonnais

Montmorillonnais refers to a geological term that designates a specific type of clay, particularly a variety of smectite clay that is rich in montmorillonite. This clay is characterized by its ability to expand and contract when it absorbs water, which gives it unique properties useful in various applications such as drilling fluids, sealants, and ceramics. The name comes from the Montmorillon area in France, where this type of clay was first identified. Montmorillonnais clays are known for their high cation-exchange capacity and are used in agriculture to improve soil quality and water retention.