25: Salt, sulphur, earth, stone, plaster, lime and cement

2501: Salt (sodium chloride) including solution, salt water 2502: Unroasted iron pyrites 2503: Sulphur, except sublimated, precipitated, colloidal 2504: Natural graphite 2505: Natural sand except sand for mineral extraction 2506: Quartz (except natural sands) and quartzite 2507: Kaolin and other kaolinic clays 2508: Clay nes (except expanded clay for insulation) 2509: Chalk 2510: Natural phosphates (calcium, calcium-aluminium), chal 2511: Natural barium sulphates and carbonates 2512: Siliceous fossil meals and earths 2513: Pumice stone, emery and other natural abrasives 2514: Slate 2515: Marble, travertine, ecaussine etc 2516: Granite, porphyry, basalt, sandstone, etc. 2517: Pebbles, gravels, aggregates and macadam 2518: Dolomite 2519: Natural magnesium carbonate, magnesium oxide 2520: Gypsum, anhydride, gypsum plaster 2521: Limestone materials for manufacture of lime or cement 2522: Quicklime,slaked, hydraulic lime for construction etc 2523: Cement (portland, aluminous, slag or hydraulic) 2524: Asbestos 2525: Mica 2526: Natural steatite 2527: Natural cryolite, natural chiolite 2528: Natural borates, concentrates, boric acid (<85%) 2529: Natural fluorine minerals 2530: Mineral substances, nes 25: Salt, sulphur, earth, stone, plaster, lime and cement