Mica is mined primarily in countries like India, Madagascar, China, and the United States, with India being the largest producer. The extraction process can be labor-intensive and is often conducted in small-scale mines. While these regions possess significant mica reserves, improper mining practices can lead to environmental degradation and social issues, including child labor and exploitation of workers.

In addition, lepidolite and ferrolepidolite can also be used as mineral raw materials for extracting lithium.

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.  

It is an indispensable and important raw material in the fields of electric heating equipment, wire and cable, aerospace and so on.