Ground Nepheline Syenite Powder from Mexico
Finely ground nepheline syenite powder derived from igneous rock deposits, primarily composed of nepheline, albite, and microcline feldspar. Classified under HTS 2529.30.0010 as nepheline syenite, used as a functional filler in paints, coatings, and plastics for improving opacity and durability.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify mineral composition via lab analysis to confirm nepheline syenite content and avoid reclassification as generic feldspar
• Provide geological origin certificates as documentation to distinguish from leucite or other silicates
• Ensure particle size specs match statistical note tolerances to prevent customs disputes on processing level