Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 08 Other clays, andalusite, kyanite, etc; mullite; chamotte or dinas earths 25 08 50 Andalusite, kyanite and sillimanite 25 08 50 00 Andalusite, kyanite and sillimanite Commodity Code Description 25 08 50 00 000 Andalusite, kyanite and sillimanite