Ground Phosphorite Rock
Finely ground natural calcium phosphate rock extracted from sedimentary deposits, used primarily as a raw material in phosphate fertilizer production. Classified under HTS 2510.20.00.00 as ground natural calcium phosphates, distinguishing it from unground ores in 2510.10. It meets the chapter definition for mineral products not covered by other headings like chemical precipitates.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unground or in natural lumps
Unground natural calcium phosphates fall under 2510.10, as grinding changes the physical state for processing.
If chemically processed into superphosphates
Once treated with acid to create water-soluble phosphatic fertilizers, it shifts from raw mineral to Chapter 31 manufactured fertilizers.
If blended with mineral nutrients for retail fertilizer
Mixtures containing ground phosphates with added potassium or nitrogen become Chapter 31 fertilizer mixtures.
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Import Tips & Compliance
• Verify purity through lab analysis to confirm natural origin and avoid reclassification as synthetic phosphates under Chapter 28; obtain geological source certificates; ensure particle size documentation matches 'ground' criteria under statistical notes
Related Products under HTS 2510.20.00.00
Ground Florida Pebble Phosphate
Ground phosphate pebbles from Florida deposits, a natural calcium phosphate used in animal feed supplements and fertilizer bases. HTS 2510.20.00.00 applies to its ground form as natural calcium phosphates, separate from unprocessed rock.
Milled Phosphatic Chalk
Ground phosphatic chalk, a soft natural calcium phosphate-rich sedimentary rock, used in soil amendments and as a phosphate source. Falls under HTS 2510.20.00.00 for ground forms, explicitly including phosphatic chalk per the heading.
Ground Apatite Ore
Pulverized apatite, a natural calcium phosphate mineral ore, ground for use in producing phosphoric acid and fertilizers. HTS 2510.20.00.00 covers ground natural calcium phosphates like apatite.
Pulverized Phosphate Rock Flour
Ultra-fine ground phosphate rock resembling flour, used directly as slow-release fertilizer or in micronutrient mixes. Classified in 2510.20.00.00 due to its ground natural calcium phosphate nature.
Ground Natural Aluminum Calcium Phosphate
Milled phosphorite containing aluminum calcium phosphates, used in specialty fertilizers. HTS 2510.20.00.00 explicitly includes ground forms of both calcium and aluminum calcium phosphates.
Ground Moroccan Phosphate Rock
Ground high-grade phosphate from Moroccan mines, a key global source of natural calcium phosphates for fertilizer industry. Fits 2510.20.00.00 as ground natural calcium phosphates.