What is the medicinal value of black mica?
Muscovite is divided into a wide range of rock forming minerals of the three main types are output of argillaceous rocks can be formed in the lower region of Sericite metamorphism, metamorphic degree is high, a muscovite. During the late period of acid magmatic crystallization and the stage of pegmatite, a large number of Muscovite daughters were formed. It can also be produced during the alteration from high temperature to moderate and low temperature. The so-called dolomitization is one of the high temperature alteration, which can form a large number of muscovite. The so-called sericite is one of the low temperature alteration, and can form a large number of sericite. The weathering of Muscovite is broken into very fine scales, which can be either clastic sediments or one of the mineral components of argillaceous rocks.
The orthorhombic columnar crystal muscovite, usually a plate or sheet, a fake six square or diamond shape. The cylinder has distinct transverse stripes. Twin common multi parent generation law Evian contact twin or triple crystal with.
Muscovite schist occurs mainly in acidic magmatite; in addition, also often appeared in the greisen rock and metamorphic schist and gneiss. Produced in granite muscovite, often formed with great industrial value of crystal formation; pegmatite Muscovite is multi-stage; hydrothermal deposits and hydrothermal metamorphic rocks in China, sericite effect is widespread, the formation of Sericite muscovite; in metamorphic rocks are widely distributed, it is involved in the formation of clayey rocks under high temperature and under potassium.
