Calcined Ulexite Ore Concentrate from Canada
Ulexite is a natural sodium calcium borate mineral concentrated and calcined for industrial use in glass and ceramics production. It falls under HTS 2528.00.0005 as a natural sodium borate concentrate that has been calcined, excluding borates separated from brine. This form enhances solubility for manufacturing applications.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify mineral composition via assay certificates to confirm sodium borate content; ensure calcination process documentation to avoid misclassification as unprocessed ore
• Check for radioactive impurities common in borate deposits