What is mica?
Mica is a rock-forming mineral in the earth's crust and is a generic term for a group of minerals. The mica group of minerals is an aluminosilicate ore with a complex chemical composition. In addition to silicon, aluminium and oxygen, the main elements include potassium, sodium, magnesium, iron and lithium. Besides, natural mica group minerals are more commonly known for their isomorphism. Therefore, mica contains other minor elements such as manganese, titanium, gallium, barium and sulphur.