\▐ben-tәn-▐īt\ n (1898) Very fine-grained clay (a mixture and not a definite mineral type) derived from volcanic ash and consisting largely of montmorillonite mineral. Two classes of Bentonite are recognized: (1) sodium bentonite, which is a swelling type in water, and (2) calcium bentonite or subbentonite, which exhibits little swelling in water. See Aluminum Silicate. Also known as Wilkinite
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Gooch, J.W. (2011). Bentonite. In: Gooch, J.W. (eds) Encyclopedic Dictionary of Polymers. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6247-8_1203
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