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Ball clays are sedimentary (kaolinitic) and used in ceramic and pottery application. Ball clays comprises three dominant minerals; kaolinite (20%-80%), mica (10%-25%) and quartz (6%-65%). In addition, there are other accessory minerals and some carbonaceous material (derived from ancient plants) present in ball clay. There is a variation in mineral composition and size of ball clay particles thus, they have different characteristics. The physical properties of ball clay vary hence used according in various end user industries. However, the general properties of ball clay includes; moisture content between 18% to 22% and are available in various colors, for instance, white, different shades of gray and brown, pink, tan, black and the shades in between.
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