Tennessee Brown Rock Phosphate
Unground brown rock phosphate from Tennessee deposits, rich in natural apatite for organic farming applications. Classified in HTS 2510.10.00.00 as unground natural calcium phosphates, ideal for direct soil application.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If magnesium phosphate dominant
Natural aluminum calcium phosphates or high-Mg variants under heading 2511.
If acidulated into soft rock phosphate
Partially acid-treated forms become phosphatic fertilizers in Chapter 31.
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Import Tips & Compliance
• Certify low magnesium content to stay under 2510; higher levels route to 2511
• For organic certification, provide mining origin docs showing no chemical treatment
• Avoid fine screening that could classify as partially ground under customs scrutiny
Related Products under HTS 2510.10.00.00
Unground Florida Pebble Phosphate Rock
Natural calcium phosphate rock mined from Florida deposits, unground and in its raw form with less than 4% magnesium oxide content. Classified under HTS 2510.10.00.00 as unground natural calcium phosphates, suitable for fertilizer production or further processing. It consists primarily of apatite minerals and meets the criteria for unprocessed phosphatic rock.
Raw Moroccan Phosphate Ore
Unground phosphate rock from Moroccan mines, primarily sedimentary apatite with high P2O5 content. Falls under HTS 2510.10.00.00 as natural calcium phosphates in unprocessed, unground form for use in phosphoric acid or fertilizer manufacturing.
Natural Phosphatic Chalk Lumps
Unground lumps of phosphatic chalk, a soft calcareous material containing natural calcium phosphates. HTS 2510.10.00.00 covers this as unground phosphatic chalk, used in soil amendment or animal feed supplements.
Christmas Island Phosphate Rock
Raw, unground phosphate rock from Christmas Island guano deposits, high in P2O5. HTS 2510.10.00.00 applies to this natural calcium phosphate in lump form for phosphate chemical industry.
Nauru Island Unground Phosphorite
Unground phosphorite ore from Nauru raised atolls, a premium natural calcium phosphate source. Fits HTS 2510.10.00.00 for unprocessed phosphatic rock used in high-purity phosphoric acid production.