Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement

Code

Description

2501 0000 00

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 0000 00

Unroasted iron pyrites
2503 0000

Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur
- 2503 0000 10
  
  Crude or unrefined sulfur
- 2503 0000 90
  
  Other
2504

Natural graphite:
- 2504 10
  
  In powder or in flakes:
  - 2504 1010 00
    
    Crystalline flake (not including flake dust)
  - 2504 1050 00
    
    Other
- 2504 9000 00
  
  Other
2505

Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26:
- 2505 10
  
  Silica sands and quartz sands:
  - 2505 1010 00
    
    Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron
  - 2505 1050 00
    
    Other
- 2505 9000 00
  
  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:
- 2506 1000
  
  Quartz
  - 2506 1000 10
    
    Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron
  - 2506 1000 50
    
    Other
- 2506 2000
  
  Quartzite
  - 2506 2000 10
    
    Crude or roughly trimmed
  - 2506 2000 80
    
    Other
2507 0000 00

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:
- 2508 1000 00
  
  Bentonite
- 2508 3000 00
  
  Fire-clay
- 2508 4001
  
  Other clays
  - 2508 4001 10
    
    Common blue clay and other ball clays
  - 2508 4001 20
    
    Decolorizing earths and fuller's earth
  - 2508 4001 50
    
    Other
- 2508 5000 00
  
  Andalusite, kyanite and sillimanite
- 2508 6000 00
  
  Mullite
- 2508 7000 00
  
  Chamotte or dinas earth
2509 00

Chalk:
- 2509 0010 00
  
  Crude
- 2509 0020 00
  
  Other
2510

Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk:
- 2510 1000 00
  
  Unground
- 2510 2000 00
  
  Ground
2511

Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816:
- 2511 10
  
  Natural barium sulfate (barytes):
  - 2511 1010 00
    
    Ground
  - 2511 1050 00
    
    Other
- 2511 2000 00
  
  Natural barium carbonate (witherite)
2512 0000 00

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; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated:
- 2513 1000
  
  Pumice stone
  - 2513 1000 10
    
    Crude or in irregular pieces, including crushed pumice
  - 2513 1000 80
    
    Other
- 2513 20
  
  Emery, natural corundum, natural garnet and other natural abrasives:
  - 2513 2010 00
    
    Crude or in irregular pieces
  - 2513 2090 00
    
    Other
2514 0000 00

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 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 (including square) shape:
- Marble and travertine:
  - 2515 1100 00
    
    Crude or roughly trimmed
  - 2515 12
    
    Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape:
    
    2515 1210 00
    
    Marble
    
    2515 1220 00
    
    Travertine
- 2515 2000 00
  
  Other calcareous monumental or building stone; alabaster
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:
- Granite:
  - 2516 1100 00
    
    Crude or roughly trimmed
  - 2516 1200
    
    Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
    
    2516 1200 30
    
    Having a thickness of 7.5 cm or more
    
    2516 1200 60
    
    Other
- 2516 20
  
  Sandstone:
  - 2516 2010 00
    
    Crude or roughly trimmed
  - 2516 2020 00
    
    Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
- 2516 9000
  
  Other monumental or building stone
  - 2516 9000 30
    
    Having a thickness of 7.5 cm or more
  - 2516 9000 60
    
    Other
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 not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated:
- 2517 1000
  
  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
  - 2517 1000 15
    
    Pebbles and gravel
  - 2517 1000 20
    
    Limestone, except pebbles and gravel
  - 2517 1000 55
    
    Other
- 2517 2000 00
  
  Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10
- 2517 3000 00
  
  Tarred macadam
- Granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated:
  - 2517 4100 00
    
    Of marble
  - 2517 4900 00
    
    Other
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 square) shape:
- 2518 1000 00
  
  Dolomite, not calcined or sintered
- 2518 2000 00
  
  Calcined or sintered dolomite
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:
- 2519 1000 00
  
  Natural magnesium carbonate (magnesite)
- 2519 90
  
  Other:
  - 2519 9010 00
    
    Fused magnesia and dead-burned (sintered) magnesia
  - 2519 9020 00
    
    Caustic calcined magnesite
  - 2519 9050 00
    
    Other
2520

Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders:
- 2520 1000 00
  
  Gypsum; anhydrite
- 2520 2000 00
  
  Plasters
2521 0000 00

Limestone flux; limestone and other calcareous stone, 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:
- 2522 1000 00
  
  Quicklime
- 2522 2000 00
  
  Slaked lime
- 2522 3000 00
  
  Hydraulic lime
2523

Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers:
- 2523 1000 00
  
  Cement clinkers
- Portland cement:
  - 2523 2100 00
    
    White cement, whether or not artificially colored
  - 2523 2900 00
    
    Other
- 2523 3000 00
  
  Aluminous cement
- 2523 9000 00
  
  Other hydraulic cements
2524

Asbestos:
- 2524 1000 00
  
  Crocidolite (Blue)
- 2524 9000
  
  Other
  - 2524 9000 10
    
    Amosite
  - Chrysotile:
    
    2524 9000 30
    
    Crudes
    
    2524 9000 40
    
    Milled fibers, group 3 grades (spinning fibers or equivalent)
    
    2524 9000 45
    
    Milled fibers, group 4 and 5 grades
    
    2524 9000 55
    
    Other
  - 2524 9000 60
    
    Other
2525

Mica, including splittings; mica waste:
- 2525 1000
  
  Crude mica and mica rifted into sheets or splittings
  - 2525 1000 10
    
    Split block mica
  - 2525 1000 20
    
    Mica splittings
  - 2525 1000 50
    
    Other
- 2525 2000 00
  
  Mica powder
- 2525 3000 00
  
  Mica waste
2526

Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc:
- 2526 1000 00
  
  Not crushed, not powdered
- 2526 2000 00
  
  Crushed or powdered
2528 0000

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 percent of H3BO3 calculated on the dry weight
- 2528 0000 05
  
  Natural sodium borates and concentrates thereof (whether or not calcined)
- 2528 0000 10
  
  Natural calcium borates
- 2528 0000 50
  
  Other
2529

Feldspar; leucite, nepheline and nepheline syenite; fluorspar:
- 2529 1000 00
  
  Feldspar
- Fluorspar:
  - 2529 2100 00
    
    Containing by weight 97 percent or less of calcium fluoride
  - 2529 2200 00
    
    Containing by weight more than 97 percent of calcium fluoride
- 2529 3000
  
  Leucite; nepheline and nepheline syenite
  - 2529 3000 10
    
    Nepheline syenite
  - 2529 3000 50
    
    Other
2530

Mineral substances not elsewhere specified or included:
- 2530 1000 00
  
  Vermiculite, perlite and chlorites, unexpanded
- 2530 20
  
  Kieserite, epsom salts (natural magnesium sulfates):
  - 2530 2010 00
    
    Kieserite
  - 2530 2020 00
    
    Epsom salts
- 2530 90
  
  Other:
  - 2530 9010 00
    
    Natural cryolite; natural chiolite
  - 2530 9020 00
    
    Natural micaceous iron oxides
  - 2530 9080
    
    Other
    
    2530 9080 10
    
    Celestite
    
    2530 9080 15
    
    Earth colors
    
    2530 9080 50
    
    Other