AF Sodalite Nepheline Syenite from Mexico
AF-grade nepheline syenite containing sodalite inclusions, used in low-expansion glass-ceramics. Natural mineral product under HTS 2529.30.0010, distinguished by inclusion analysis.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Inclusion microscopy reports essential to document sodalite content
• Thermal expansion certificates support glass end-use claims
• Segregate from standard grades to prevent averaging duties