Mica is a generic term applied to a group of complex aluminosilicate minerals. It forms flat six-sided monoclinical crystals with a remarkable cleavage into the direction of large surfaces. This nature allows to split into thin films.

You will easily find small bits of shining pieces in the seashore sand. Those are Mica of small bits came out from rocks in the course of broken to sand.

Large sizes and suitable qualities for industry uses are available mainly in India, Brazil, Canada and Madagascar, etc.

Mica deposit in India is generally under the ground of 30 to 50 meters depth. Mica lumps are brittle and the mining is mainly operated by human hands with hammer and chisels. There are many mines carried by only one unit of family.

The supports of drifts are not enough to prevent cave-in. Full of humidity by underground water and high temperature from insufficient air conditioning causes low production.

Nowadays, many mines have closed or stopped operation because of high production cost. This tendency is more as the deposit becomes deeper.

Our president had experienced Mica Mining in his young.