Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lirne and cement 25 08 Other clays (not including expanded clays of heading†6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths Commodity Code Description 25 08 10 Bentonite 25 08 30 Fireclay 25 08 40 Other clays 25 08 50 Andalusite, kyanite and sillimanite 25 08 60 Mullite 25 08 70 Chamotte or dinas earths