Die beiden bekanntesten Arten von Glimmer sind Muskovit und Biotit. Muskovit, auch als Weissglimmer bezeichnet, ist ein durchscheinender bis durchsichtiger Glimmer, der häufig in hellem Farbton vorkommt, wie zum Beispiel Grau, Gelb oder Grün. Aufgrund seiner hohen Temperaturbeständigkeit und guten elektrischen Isolationseigenschaften wird Muskovit häufig in der Elektroindustrie eingesetzt, insbesondere in Kondensatoren und Isolatoren. Zudem findet es Verwendung in kosmetischen Produkten, da es eine schimmernde Wirkung auf der Haut erzeugt.

The common characteristics of mica group minerals are: layered silicate minerals, monoclinic crystal system, a few trigonal crystal system, the crystals are pseudo-hexagonal columnar, plate and sheet; The aggregate is scaly and foliaceous. It has a set of extremely complete cleavage, along which it is easy to peel into sheets. Therefore, the shape of mica is usually regarded as sheet.

X represents large interlayer cations, such as K+, Na+, Ca2+, Ba2+, Rb+, Cs+, etc. Y represents octahedral cations, such as Al3+, Fe2+, Mg2+, Cr3+, Ti4+, Fe3+, etc. Z is mainly Si4+ and Al3+; The ideal ratio of the additional anion (OH)- to (O)2- is 2:10, and (OH)- can be replaced by F- and Cl-. Most mica contain 4% to 5% water. Therefore, although they may be called mica, the chemical composition of different mica may be very different, for the purpose of research, we collectively refer to the minerals with this type of characteristics as mica group minerals.  

Mica is a group of silicate minerals that are known for their ability to form thin sheets. These minerals can be ground into a fine powder, creating a glittering effect that has made it a favorite in cosmetics. Mica powder is available in various shades, making it a versatile ingredient that can enhance the appearance of makeup products, including eyeshadows, highlighters, and even foundations.

Mica is a new non-metallic crystal material, a national key new material, with heat insulation, insulation, high temperature resistance characteristics, is an important material in aerospace, rail transit, nuclear power, wind power, aircraft carriers and other high-tech fields, but also electrical equipment, wire and cable, household appliances indispensable insulation material, in the national economy and national defense construction plays an important role.

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