Stephanite Concentrate from Mexico
Stephanite (Ag12Sb4S13) silver-antimony concentrate produced by froth flotation, containing 60%+ silver. Under HTS 2616.10.00 for silver concentrates. Smelted to antimonial lead bullion.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Test for radioactive impurities common in vein ores
• Coordinate with smelter for pre-arrival treatment plans
• Use refrigerated containers if moisture control critical