Minerals
Mica
Sheet silicate group
Stephanie Clifford from Arlington, VA, USA / CC BY 2.0, via Wikimedia Commons · CC BY 2.0 · Source
Overview
Perfect basal cleavage into flexible sheets.
Identification characteristics
- Mohs hardness 2–3
- Streak: White
- Lustre: Pearly to vitreous
Formation and occurrence
Igneous and metamorphic rocks
Common uses
Electrical insulation, fillers