What Are the Four Types of Clay? Pottery Crafters
Kaolinite. Kaolinite is a soft, earthy clay mineral with white color. This compound is found in all clay types. The compound is flexible but inelastic. Its found with a rust hue in some areas of the world. Kaolinite is a silicate compound. Smectite. Smectite refers to clay minerals that contain varying amounts of alkali metals and alkaline earth metals. Clay minerals absorb water and are able to expand.