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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically treated or superphosphoric
Processed or chemically modified phosphates for fertilizers fall under Chapter 31 as mineral fertilizers, not raw natural phosphates.
If containing over 4% magnesium oxide
Phosphates with higher magnesium content are classified as natural magnesium phosphates under heading 2511.
If mixed with other earth minerals
Blended mineral earths or phosphatic chalk mixtures fall under heading 2530 for other mineral substances.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Obtain geological assay reports confirming natural calcium phosphate composition and unground status to avoid reclassification as ground material
• Verify country of origin documentation, as certain phosphate exporters may face quotas or additional scrutiny under fertilizer trade rules
• Ensure proper bulk packaging to prevent contamination or inadvertent grinding during transport, which could shift classification
Related Products under HTS 2510.10.00.00
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.
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.
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.