formula: K2O Al2O3SiO2
( flakes )
Mica has a very high dielectric strength making it a favored material for use as an insulator in high voltage electrical equipment.
It's also quite resistant to heat, so it is frequently used as an insulating material in electric and kerosene heating equipment.
Mica flake and fine powders are also mixed with clear paint or varnish to produce
a unique paint.
( Material Safety Data Sheet )