Sodium Feldspar Lumps from Mexico
Sodium feldspar (albite) in lump form is extracted from pegmatite deposits and used primarily in glass manufacturing as a source of alumina and silica. Classified under HTS 2529.10.00.00 as raw feldspar, it has undergone minimal processing like crushing to lump size without chemical alteration.
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
• Include mineral composition analysis (Na2O, Al2O3 content) in import docs to substantiate feldspar classification
• Declare exact particle size distribution to distinguish from powders that might edge into other categories
• Check for radioactive impurities common in feldspar deposits, as high levels trigger additional NRC regulations