Harmonized Tariff Schedule of the U.S. › Section V Mineral products
25Salt; sulphur; earths and stone; plastering materials, lime and cement
101 statistical lines · Expand a heading; the right column is the general rate.
Unroasted iron pyrites2502.00.00.00Free
Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur2503.00.00
Crude or unrefined sulfur2503.00.00.10Free
Other2503.00.00.90Free
Natural graphite2504
In powder or in flakes2504.10
Crystalline flake (not including flake dust)2504.10.10.00Free
Other2504.10.50.00Free
Other2504.90.00.00Free
Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 262505
Silica sands and quartz sands2505.10
Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron2505.10.10.00Free
Other2505.10.50.00Free
Other2505.90.00.00Free
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) shape2506
Quartz2506.10.00
Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron2506.10.00.10Free
Other2506.10.00.50Free
Quartzite2506.20.00
Crude or roughly trimmed2506.20.00.10Free
Other2506.20.00.80Free
Kaolin and other kaolinic clays, whether or not calcined2507.00.00.00Free
Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths2508
Bentonite2508.10.00.00Free
Fire-clay2508.30.00.00Free
Other clays2508.40.01
Common blue clay and other ball clays2508.40.01.10Free
Decolorizing earths and fuller's earth2508.40.01.20Free
Other2508.40.01.50Free
Andalusite, kyanite and sillimanite2508.50.00.00Free
Mullite2508.60.00.00Free
Chamotte or dinas earth2508.70.00.00Free
Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk2510
Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 28162511
Natural barium carbonate (witherite)2511.20.00.00Free
Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated2513
Pumice stone2513.10.00
Crude or in irregular pieces, including crushed pumice2513.10.00.10Free
Other2513.10.00.80Free
Emery, natural corundum, natural garnet and other natural abrasives2513.20
Crude or in irregular pieces2513.20.10.00Free
Other2513.20.90.00Free
Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape2514.00.00.00Free
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) shape2515
Marble and travertine2515
Crude or roughly trimmed2515.11.00.00Free
Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape2515.12
Marble2515.12.10.00Free
Travertine2515.12.20.003%
Other calcareous monumental or building stone; alabaster2515.20.00.003%
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) shape2516
Granite2516
Crude or roughly trimmed2516.11.00.00Free
Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape2516.12.00
Having a thickness of 7.5 cm or more2516.12.00.302.8%
Other2516.12.00.602.8%
Sandstone2516.20
Crude or roughly trimmed2516.20.10.00Free
Other monumental or building stone2516.90.00
Having a thickness of 7.5 cm or more2516.90.00.303%
Other2516.90.00.603%
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-treated2517
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-treated2517.10.00
Pebbles and gravel2517.10.00.15Free
Limestone, except pebbles and gravel2517.10.00.20Free
Other2517.10.00.55Free
Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.102517.20.00.00Free
Tarred macadam2517.30.00.00Free
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) shape2518
Dolomite, not calcined or sintered2518.10.00.00Free
Calcined or sintered dolomite2518.20.00.003%
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 pure2519
Natural magnesium carbonate (magnesite)2519.10.00.00Free
Other2519.90
Fused magnesia and dead-burned (sintered) magnesia2519.90.10.00Free
Caustic calcined magnesite2519.90.20.00Free
Other2519.90.50.00Free
Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders2520
Gypsum; anhydrite2520.10.00.00Free
Plasters2520.20.00.00Free
Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement2521.00.00.00Free
Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 28252522
Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers2523
Cement clinkers2523.10.00.00Free
Portland cement2523
White cement, whether or not artificially colored2523.21.00.00Free
Other2523.29.00.00Free
Aluminous cement2523.30.00.00Free
Other hydraulic cements2523.90.00.00Free
Asbestos2524
Crocidolite (Blue)2524.10.00.00Free
Other2524.90.00
Amosite2524.90.00.10Free
Chrysotile2524.90.00
Crudes2524.90.00.30Free
Milled fibers, group 3 grades (spinning fibers or equivalent)2524.90.00.40Free
Milled fibers, group 4 and 5 grades2524.90.00.45Free
Other2524.90.00.55Free
Other2524.90.00.60Free
Mica, including splittings; mica waste2525
Crude mica and mica rifted into sheets or splittings2525.10.00
Mica powder2525.20.00.00Free
Mica waste2525.30.00.00Free
Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc2526
Not crushed, not powdered2526.10.00.00Free
Crushed or powdered2526.20.00.00Free
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 H3 BO3 calculated on the dry weight2528.00.00
Natural calcium borates2528.00.00.10Free
Other2528.00.00.50Free
Feldspar; leucite, nepheline and nepheline syenite; fluorspar2529
Feldspar2529.10.00.00Free
Fluorspar2529
Containing by weight 97 percent or less of calcium fluoride2529.21.00.00Free
Containing by weight more than 97 percent of calcium fluoride2529.22.00.00Free
Leucite; nepheline and nepheline syenite2529.30.00
Nepheline syenite2529.30.00.10Free
Other2529.30.00.50Free
Mineral substances not elsewhere specified or included2530
Vermiculite, perlite and chlorites, unexpanded2530.10.00.00Free
Kieserite, epsom salts (natural magnesium sulfates)2530.20
Kieserite2530.20.10.00Free
Epsom salts2530.20.20.00Free
Other2530.90
Natural cryolite; natural chiolite2530.90.10.00Free
Natural micaceous iron oxides2530.90.20.002.9%