Mica is a rock-forming mineral with a hexagonal lamellar crystal shape.

Mica is a unique rock forming mineral that is characterized by its hexagonal lamellar crystal shape. It is considered one of the main rock forming minerals due to its abundance and widespread use in various industries. Mica crystals have a distinct layered structure that gives them their lamellar crystal formation, with a predominant hexagonal shape. This mineral is known for its exceptional insulation properties and high temperature resistance, making it a highly sought-after material for a variety of industrial applications. One of the most commonly used types of mica is sericite, which finds extensive use in industries such as paint manufacturing, electrical insulation, and cosmetics. Due to its unique properties and versatile nature, mica continues to be a valuable resource in the world of materials science and industrial manufacturing.

Mica is the general name of mica group minerals, is the aluminum silicate of potassium, aluminum, magnesium, iron, lithium and other metals, are layered structure, monoclinic crystal system. The crystals are pseudohexagonal or platelike, sometimes columnar. The lamellar cleavage is very complete, glassy, and the flakes are elastic. The refractive index of mica increases with the increase of the content of iron, and can be from low to medium protrusion. The variety without iron, colorless in the flake, the higher the iron content, the darker the color, while the polychromatic and absorbency increased,

Mica ore mainly includes biotite, phlogopite, Muscovite, lepiolite, sericite, green mica, iron lepiolite, etc. Placer gold stone is a mixed mineral of mica and quartz. Muscovite and phlogopite are the most used in industry, and lelithium is an important mineral raw material for extracting lithium.