Raw Chalk Rock for Crushing
Large blocks of raw natural chalk stone intended for crushing into aggregate or powder in construction and manufacturing. This raw form qualifies as 'other' chalk under HTS 2509.00.20.00.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If crushed or screened into pebbles/granules for ballast
Chapter note mandates 2517 classification for processed pebbles, gravel, etc., overriding 2509.
If shaped into setts, curbstones, or flagstones
Chapter exclusions direct setts and flagstones to 6801 as worked monumental stone.
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Import Tips & Compliance
• Provide quarry origin certificates to prove natural chalk composition; check for dolomite impurities that could reclassify; use proper bulk packaging to prevent breakage claims
Related Products under HTS 2509.00.20.00
Natural Chalk Lumps
Rough, unprocessed lumps of natural calcium carbonate chalk mined from chalk deposits, used primarily as a raw material for industrial grinding and processing. This falls under HTS 2509.00.20.00 as 'other' natural chalk, excluding chalk for writing, drawing, or tailors' use as per Chapter 25 notes.
Chalk Powder for Industrial Fillers
Finely ground natural chalk powder (calcium carbonate) used as a filler in paints, plastics, and rubber manufacturing. Classified under HTS 2509.00.20.00 as 'other' chalk, distinct from processed or writing chalk.
Chalk Filler for Cement Production
Ground natural chalk used as a functional filler in Portland cement manufacturing to adjust composition. Falls under HTS 2509.00.20.00 as industrial 'other' chalk, not a finished construction product.
Natural Chalk for Soil Amendment
Granular or powdered natural chalk applied to acidic soils to raise pH levels in agriculture. Classified as 'other' chalk in HTS 2509.00.20.00 for its raw mineral state.
Chalk Ore Concentrate
Concentrated natural chalk ore after basic washing and sizing, but before fine grinding, for further processing. HTS 2509.00.20.00 covers this minimally processed 'other' chalk.
Bulk Natural Chalk for Animal Feed
Coarse natural chalk grit used as a calcium supplement in poultry and livestock feed formulations. Remains under HTS 2509.00.20.00 as unprocessed 'other' chalk.