Nepheline Syenite Lumps from Mexico
Coarse lumps of nepheline syenite rock, typically 2-10 cm, mined for crushing into flux material for porcelain and tile production. Falls under HTS 2529.30.00 as unworked nepheline syenite, suitable for direct industrial processing. Low iron content ensures clean burning in white ceramics.
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
• Include quarry origin certificates; specify 'not calcined' status to avoid 2507/2508 clay headings
• Use sturdy bulk bags to prevent breakage that could imply processing during transit
• Test for consistent alkali content; variations may trigger reclassification as 2530 mixed minerals