Split Block Muscovite Mica from Mexico
Split block muscovite mica consists of thin sheets of muscovite mica, not exceeding 0.508 mm in thickness, split and selected within a 0.203 mm tolerance but not cut or stamped to specific dimensions. This crude form is ideal for further processing into electrical insulators or glazing due to its dielectric properties and heat resistance. It falls under HTS 2525.10.0010 as it precisely matches the definition of split block mica.
Duty Rate — Mexico → United States
Rate breakdown
Import Tips
• Verify thickness (≤0.508 mm) and tolerance (±0.203 mm) with lab certification to confirm split block classification and avoid reclassification as crude mica
• Provide geological origin documentation, as some mica sources may trigger conflict mineral reporting under Dodd-Frank
• Ensure packaging prevents breakage, as damaged sheets could be deemed mica waste (2525.30) upon inspection