Tin-Bearing Cassiterite Ore Concentrate from Mexico
Gravity-separated cassiterite concentrate averaging 60% tin content from hard-rock lode deposits. Falls under HTS 2617.90.00 as other ores excluding specific tungsten-tin mixtures.
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
• Test for tungsten impurities; levels over 5% may require reclassification under 2617.90.10
• Maintain chain-of-custody documentation from mine to port for smelter verification
• Declare particle size distribution to confirm gravity concentrate vs. flotation types