25010020

Rock salt

25010050

Sea water

25010090

Other

25020000

Unroasted iron pyrites.

25030000

Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur.

2504

Natural graphite.

25041000

 In powder or in flakes

25049000

 Other

2505

Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of Chapter 26.

25051000

 Silica sands and quartz sands

25059000

 Other

2506

Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape.