2501 - Salt [including table salt and denatured salt] and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free flowing agents; sea water

2502 - Unroasted iron pyrites

2503 - Sulphur of all kinds, other than sub-limited sulphur, precipated sulphur and collodial sulphur

2504 - Natural graphite

2505 - Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of chapter 26

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

2507 - Kaolin and other kaolinic clays, whether or not calcined

2508 - Other clays [not including expanded clays of heading 6806], andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths

2509 - Chalk

2510 - Natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk

2511 - Natural barium sulphate [barytes]; natural barium carbonate [witherite], whether or not calcined, other than barium oxide of heading 2816

2512 - Siliceous fossil meals [for example, kieselguhr, tripolite and diatomite] and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less

2513 - Pumice stones; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated

2514 - Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular [including square] shape

2515 - Marble, travertine, ecaussine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular [inc

2516 - Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular [including square] shape

2517 - Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling or for railway or other ballast, shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or n

2518 - Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular [including squareshape]; dolomite ramming mix

2519 - Natural magnesium carbonate [magnesite]; fused magnesia; dead-burned [sintered] magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure

2520 - Gypsum; anhydrite; plasters [consisting of calcined gypsum or calcium sulphate] whether or not coloured, with or without small quantities of accelerates or retarders

2521 - Limestone flux; limestone and other calcareous stones, of a kind used for the manufacture of lime or cement

2522 - Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825

2523 - Portland cement, aluminous cement [?cement fondu?], slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers

2524 - Asbestos however, import of cryocidilite, actinolite ,anthophylite,amosite and tremolite will be restricted and subject to conditions at import licencing note [1] below.

2525 - Mica, including splittings; mica waste

2526 - Natural steatite, whether or not roughly trimmed or merely cut, by sewing or otherwise, into blocks or slabs of a rectangular [including square] shape; talc

2528 - Natural borates and concentrates thereof [whether or not calcined], but not including borates separated from natural brine; natural boric acid containing not more than 85% of h3bo3 calculated on the dry weight

2529 - Feldspar; nepheline and nepheline syenite; leucite; fluorspar

2530 - Mineral substances not elsewhere specified or included