Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lime and cement 25 05 Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of Chapter 26 25 05 10 - Silica sands and quartz sands Commodity Code Description 25 05 10 00 - Silica sands and quartz sands