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📌 What is Bentonite? Bentonite is a naturally occurring absorbent clay mineral formed from the alteration of volcanic ash, mainly composed of montmorillonite. It is known for its exceptional swelling, binding, adsorption, and sealing properties, which make it valuable across a wide range of industries.
| Bentonite Type | Dominant Cation | Swelling Capacity | Main Applications | Physical Form |
|---|---|---|---|---|
| Sodium Bentonite | Na⁺ | High | Drilling mud, foundry, bonding | Fine powder, granules |
| Calcium Bentonite | Ca²⁺ | Low | Cosmetics, medicine, decolorizing | Powder, lump |
| Potassium Bentonite | K⁺ | Moderate | Stratigraphy, tephrochronology | Rock, powder |
| Activated Bentonite | Processed | Variable | Adsorption, purification | Powder, granules |
| Organophilic Bentonite | Modified | Variable | Oil drilling, paints | Powder, gel |
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