… Worked mica and articles of mica, including agglomerated or reconstituted mica, whether or not on a support of paper, …
Explanatory notes
… Worked mica and articles of mica, including agglomerated or reconstituted mica, whether or not on a support of paper, … the crystals and their poor flexibility, high cost, etc., render natural mica unsuitable for many uses, it is frequently replaced by agglomerated (built-up) mica (e.g., micanite, …