Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lime and cement 25 29 Feldspar; leucite; nepheline and nepheline syenite; fluorspar 25 29 30 - Leucite; nepheline and nepheline syenite Commodity Code Description 25 29 30 00 - Leucite; nepheline and nepheline syenite