Kaolin china clay is a type of white clay that is derived from the mineral kaolinite. It is used in many products and industries, such as ceramics, paper, rubber, paint, and cosmetics. It has a fine particle size, a plate-like shape, and a high whiteness. It is also chemically inert and can absorb water and other substances. Kaolin china clay is formed by the weathering of feldspar rocks, especially in regions with volcanic activity.