= China Clays = China Clays - What are the Differences?

Ceramics? Stoneware? China? Bone China? The properties of clays include plasticity, shrinkage under firing and under air drying, fineness of grain, color after firing, hardness, cohesion, and capacity of the surface to take decoration. From these properties clays are divided into classes or groups; products are generally made from mixtures of clays and other substances. The purest clays are the china clays or kaolins. "Ball clay" is a name for a group of plastic, high-temperature clays used with other clays to improve their plasticity and to increase their strength.

* http://www.he-and-she.com/english-china/china-clay.html

two types?

I only know the 6 main types of clays used in ceramics which are: China clay (kaolin - silicate clay), Ball Clay,Fireclays, Earthenware clays, Stoneware clays,Porcelain clays..