consisting of or made of mica
• (a.) Pertaining to, or containing, mica; splitting into laminae or leaves like mica.
Aggregate of compact, flat, parallel, flexible, and peelable sheets, or describing minerals that occur in such aggregates.
Mi·ca'ceous adjective [ Confer French micacé .] Pertaining to, or containing, mica; splitting into laminæ or leaves like mica. 
adjective hydrous silicates of or relating to or resembling mica