Muscovite is a common member of the mica family that often forms thin, shimmering, highly fragile sheets. As the mineral associates with all types of rocks and boasts a global distribution, if you've spent a fair amount of time outside, you've probably seen some muscovite! When ground or processed into sheets, this mineral is a component in plastics, rubbers, asphalt roofing, paint, and a whole host of specialized engineering and electronics components.
