Which clay is often referred to as china clay and is a key component in white ceramic bodies?

• A. Kaolin
• B. Ball Clay
• C. China Clay
• D. Porcelain

Answer: (A)

Kaolin is the clay that is often called china clay, and it is the main white clay used in white ceramic bodies. It is a white, fine-grained mineral with very low iron content, which gives ceramics their characteristic bright whiteness and opacity. In porcelain and other white wares, kaolin provides the essential white body matrix and, when fired with feldspar and quartz, helps achieve the desired strength and translucency.

Ball clay, by contrast, is valued for its plasticity and workability but is not the white, low-iron component that defines china clay. Porcelain refers to the final ceramic product itself, not the specific clay, and while porcelain bodies rely on kaolin, the term describes the ware rather than the clay. Therefore, the clay most commonly referred to as china clay and key to white ceramic bodies is kaolin.