Mica is a Potassium Alumina Silicate (K
2O.Al
2O
3.SiO
2). Group of silicate minerals composed of varying amounts of aluminium, potassium, magnesium, iron and water. All micas form flat, plate-like crystals. Crystals cleave into smooth flakes. Biotite is dark, black or brown mica; muscovite is light-colored or clear mica.
Typical Applications Plastic, Paint, Paper, Fire extinguisher, Insulators, Cosmetics.