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

Unroasted iron pyrites

Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur

Crude or unrefined sulfur

Other

Natural graphite:

In powder or in flakes:

Crystalline flake (not including flake dust)

Other

Other

Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26:

Silica sands and quartz sands:

Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron

Other

Other

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:

Quartz

Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron

Other

Quartzite

Crude or roughly trimmed

Other

Kaolin and other kaolinic clays, whether or not calcined

Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:

Bentonite

Fire-clay

Other clays

Common blue clay and other ball clays

Decolorizing earths and fuller's earth

Other

Andalusite, kyanite and sillimanite

Mullite

Chamotte or dinas earth

Chalk:

Crude

Other

Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk:

Unground

Ground

Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816:

Natural barium sulfate (barytes):

Ground

Other

Natural barium carbonate (witherite)

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

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

Pumice stone

Crude or in irregular pieces, including crushed pumice

Other

Emery, natural corundum, natural garnet and other natural abrasives:

Crude or in irregular pieces

Other

Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

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:

Crude or roughly trimmed

Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape:

Marble

Travertine

Other calcareous monumental or building stone; alabaster

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:

Crude or roughly trimmed

Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

Having a thickness of 7.5 cm or more

Other

Sandstone:

Crude or roughly trimmed

Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape

Other monumental or building stone

Having a thickness of 7.5 cm or more

Other

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:

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

Pebbles and gravel

Limestone, except pebbles and gravel

Other

Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10

Tarred macadam

Granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated:

Of marble

Other

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:

Dolomite, not calcined or sintered

Calcined or sintered dolomite

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:

Natural magnesium carbonate (magnesite)

Other:

Fused magnesia and dead-burned (sintered) magnesia

Caustic calcined magnesite

Other

Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders:

Gypsum; anhydrite

Plasters

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

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

Quicklime

Slaked lime

Hydraulic lime

Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers:

Cement clinkers

Portland cement:

White cement, whether or not artificially colored

Other

Aluminous cement

Other hydraulic cements

Asbestos:

Crocidolite (Blue)

Other

Amosite

Chrysotile:

Crudes

Milled fibers, group 3 grades (spinning fibers or equivalent)

Milled fibers, group 4 and 5 grades

Other

Other

Mica, including splittings; mica waste:

Crude mica and mica rifted into sheets or splittings

Split block mica

Mica splittings

Other

Mica powder

Mica waste

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:

Not crushed, not powdered

Crushed or powdered

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

Natural sodium borates and concentrates thereof (whether or not calcined)

Natural calcium borates

Other

Feldspar; leucite, nepheline and nepheline syenite; fluorspar:

Feldspar

Fluorspar:

Containing by weight 97 percent or less of calcium fluoride

Containing by weight more than 97 percent of calcium fluoride

Leucite; nepheline and nepheline syenite

Nepheline syenite

Other

Mineral substances not elsewhere specified or included:

Vermiculite, perlite and chlorites, unexpanded

Kieserite, epsom salts (natural magnesium sulfates):

Kieserite

Epsom salts

Other:

Natural cryolite; natural chiolite

Natural micaceous iron oxides

Other

Celestite

Earth colors

Other