Description
Kaolinite has a low shrinkswell capacity and a low cation-exchange
capacity (**5 meq/**0 g). It is a soft, earthy, usually white,
mineral (dioctahedral phyllosilicate clay), produced by the
chemical weathering of aluminium silicate minerals like feldspar.
In many parts of the world it is colored pink-orange-red by iron
oxide, giving it a distinct rust hue. Lighter concentrations yield
white, yellow, or light orange colors. Alternating layers are
sometimes found, as at Providence Canyon State Park in Georgia,
United States. Commercial grades of kaolin are supplied and
transported as dry powder, semi-dry noodle or as liquid slurry.
Kaolinite has a low shrinkswell capacity and a low cation-exchange
capacity (**5 meq/**0 g). It is a soft, earthy, usually white,
mineral (dioctahedral phyllosilicate clay), produced by the
chemical weathering of aluminium silicate minerals like feldspar.
In many parts of the world it is colored pink-orange-red by iron
oxide, giving it a distinct rust hue. Lighter concentrations yield
white, yellow, or light orange colors. Alternating layers are
sometimes found, as at Providence Canyon State Park in Georgia,
United States. Commercial grades of kaolin are supplied and
transported as dry powder, semi-dry noodle or as liquid slurry.
