EPK
EPK is also known as Edgar Plastic Kaolin or Florida Kaolin. It is a relatively fine-particled and surprisingly plastic kaolin which fires to a creamy white. It shrinks about 13% at cone 9.
Georgia Diamond Kaolin
Georgia Diamond Kaolin replaces Georgia Pioneer Kaolin, which is no longer being mined. It has good greenware strength and fires white. It shrinks about 10% at cone 10.
Georgia Kaolin #6 Tile
Also known as simply #6 Tile or #6 Tile Kaolin, this is a fairly plastic kaolin with good translucency. It fires very white.
Georgia Kaolin Kaopaque
This is a substitute for Grolleg, which is no longer being mined. See below for more information.
Grolleg
Also known as English China Clay, this kaolin was known for its excellent translucency, but poor plasticity. It fired very white, with a shrinkage rate of about 14% at cone 9. Grolleg is no longer being mined; it can be replaced by Georgia Kaolin Kaopaque in clay body recipes.
Standard China Clay
Standard China Clay is one of the purest of the pure. It fires very white.
Velvacast
Velvacast is a coarse-grained kaolin used in casting slips. It is not a good choice for a throwing clay body.
