Proustite Silver Ore from Canada
Proustite (Ag3AsS3) is a silver sulfosalt ore from low-temperature veins, assaying around 60% silver. Falls under HTS 2616.10.00 as silver concentrate precursor. Flotation and roasting recover silver from arsenic-bearing matrix.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include MSDS sheets for arsenic content; follow DOT hazardous material shipping rules
• Verify origin certificates to claim preferential tariff treatments under USMCA
• Conduct pre-shipment sampling to match declared assay with customs inspection