Muscovite, also known as ordinary mica, potassium mica or mica, is one of the mica minerals. Muscovite is a good electrical insulator and thermal insulator, and it can be produced in large quantities, so it has important economic value. It is usually produced in metamorphic rocks, but it is also produced in rocks such as granite. Muscovite is not just white, it can be lighter brown, green, red to colorless, with a glass luster to silky luster. The shape is a large plate-like, hexagonal crystal or a collection of fine particles. Mineral introduction Muscovite, chemical composition: KAl2[Si3AlO10](OH,F)2, the ideal composition is octahedral sheet containing Al3+, and can also be replaced by Fe3+, Mg2+, Fe2+ or even Mn2+, Cr, V, etc. in a small amount. Muscovite has a highly complete bottom cleavage, and the color changes from colorless to light color, which is caused by the like-like mixture. The characteristics of the sheet are elastic. Formation process Muscovite is one of a wide range of rock-forming minerals and is produced in all three major rock types. Mud-like rocks can form sericite during metamorphism in low-level areas, and become muscovite when the degree of metamorphism is slightly higher. A large amount of muscovite is formed in the late stage of acid magma crystallization and in the stage of pegmatite. It can also be generated during the process of alteration from high temperature to medium and low temperature. The so-called Yunying lithification is one of the high-temperature alteration effects, which can form a large number of muscovite. The so-called sericitization is one of the low-temperature alterations and can form a large number of sericite. Muscovite is weathered and broken into very fine scales, which can be either debris in clastic sediments or one of the mineral components of argillaceous rocks. Muscovite oblique square column crystals, usually in the form of plates or sheets, forming a pseudo-hexagon or diamond shape. The cylinder has obvious horizontal stripes. The twin crystal is common, and the mica law is generated by contact twin crystal or intercalated triple crystal. Muscovite schist mainly occurs in acidic magmatic rocks; in addition, it often appears in Yunyingyan, metamorphic schist and gneiss. Muscovite produced in granite often forms crystals with greater industrial value; the formation of muscovite in pegmatite is multi-stage; in hydrothermal metal deposits and hydrothermal metamorphic rocks, sericite is very common and forms Sericite; the muscovite is widely distributed in metamorphic rocks, which is formed by the participation of clayey rocks at higher temperatures and potassium. Rayon Challis Dyed,Rayon Poplin Tie Dyed,Rayon Challis Tie Dyed,Lady Dresses Fabrics SHAOXING YINGSIPE TEXTILE CO.,LTD , https://www.chinayingsipei.com