High-Purity Chalk Quarry Run
Unscreened quarry run of high-purity natural chalk, direct from blasting operations, for pharmaceutical and food-grade processing. Strictly crude under HTS 2509.00.10.00, with no washing or sizing applied. Meets standards for further refinement into USP-grade calcium carbonate.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If precipitated pharmaceutical grade
Lab-produced calcium carbonate is a chemical, not natural crude mineral.
If quicklime calcined variant
Calcined products excluded to lime heading 2522.
If further processed into medicaments
Chapter 25 excludes any products classifiable in Chapter 30 pharmaceuticals.
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Import Tips & Compliance
• Secure FDA prior notice for potential food contact downstream use
• Require third-party lab purity analysis (>98% CaCO3) at entry
• Avoid any on-site crushing before export to preserve crude status
Related Products under HTS 2509.00.10.00
Natural White Chalk Lumps
Irregularly shaped lumps of natural calcium carbonate chalk extracted from chalk deposits, used primarily as a raw material for grinding into powder or further processing. Classified under HTS 2509.00.10.00 as crude chalk, unprocessed and not ground or powdered. It remains in its raw, mined form without any refinement.
French Cretaceous Chalk Chunks
Large, unrefined chunks of soft white chalk from Cretaceous geological formations in northern France, suitable for industrial crushing. Falls under HTS 2509.00.10.00 as crude natural chalk, directly from quarries without sizing or powdering. Ideal for toothpaste, paint, and fertilizer production.
English Dover Chalk Quarry Blocks
Massive quarry blocks of high-purity white chalk from the famous Dover cliffs in England, used in cement and soil amendment industries. HTS 2509.00.10.00 applies to this crude, unground form straight from extraction. Not suitable for immediate consumer use without processing.
Bulgarian Soft Chalk Lumps
Friable, soft lumps of natural chalk from Bulgarian deposits, valued for high whiteness in paper filler applications. Remains crude under HTS 2509.00.10.00 as it's neither powdered nor calcined post-mining. Primarily an intermediate industrial raw material.
U.S. Imported Crude Blackboard Chalk Ore
Raw ore lumps containing natural chalk suitable for blackboard chalk manufacturing, imported in unprocessed state. HTS 2509.00.10.00 covers this crude form before grinding into familiar writing chalk sticks. Excludes finished consumer products.