KAOLIN Kaolin (also known as kaolinite) is a white, soft clay mineral with a wide range of industrial applications. It is primarily composed of aluminum silicate and is well known for its high purity and fine particle size, which give it unique properties suitable for various industries. Iran is rich in kaolin deposits, particularly those known for their high-quality kaolin, which is exported to several countries due to its purity and desirable characteristics for industrial use.