Crude Mica and Mica Rifted into Sheets or Splittings

Crude mica and mechanically split mica sheets are foundational raw materials for the electrical insulation, electronics, and cosmetics industries, valued for their thermal stability and dielectric properties. The US tariff schedule subdivides this heading into split block mica (2525100010), mica splittings (2525100020), and other mica forms (2525100050), each reflecting a distinct processing stage and end-use suitability. India is the dominant supplier, with Japan and Brazil also among the leading sources. Classification between splittings and block mica affects both duty treatment and downstream processing requirements.