Bentonite. which is a mineral component of geosynthetic clay liners. has important physical and chemical properties that ensure very small hydraulic permeability. The main component of bentonite is a clay mineral called sodium montmorillonite whose very low permeability is due to its ability to swell. https://www.spidertattooz.com/Beckett-s-27-Coconut-Rum-Non-Alcoholic-Spirit-375ml/