Tennantite Copper Ore Concentrate from Canada
Tennantite, a copper arsenic sulfosalt mineral, yields concentrates with 40-50% copper after selective flotation. HTS 2603.00.00.10 applies with copper content assayed without deductions. Prevalent in porphyry copper deposits.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Segregate from food-grade cargoes due to toxic arsenic potential
• Calibrate scales for accurate net weight declaration post-moisture adjustment
• Retain processing flow sheets demonstrating concentrate production