Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 08 Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths 25 08 50 Andalusite, kyanite and sillimanite Commodity Code Description 25 08 50 00 Andalusite, kyanite and sillimanite