Mica is found in

Nawada
Jamui
Banka
Both (A) and (B)

Mica is found in both Nawada and Jamui. It is a mineral that is used in a variety of products, including electrical insulation, roofing, and cosmetics. Mica is found in igneous and metamorphic rocks, and it is often associated with other minerals such as quartz, feldspar, and garnet.

Mica is a sheet silicate mineral, which means that it is made up of layers of silicon and oxygen atoms that are held together by sheets of aluminum and potassium atoms. The layers of mica are very thin and flexible, and they can be easily separated from each other. This makes mica ideal for use in a variety of applications, including electrical insulation.

Mica is also used in roofing and cosmetics. In roofing, mica is used as a filler to improve the strength and durability of the roofing material. In cosmetics, mica is used as a pigment to add color and shine to products such as eyeshadow, lipstick, and blush.

Mica is a valuable mineral that is used in a variety of products. It is found in both Nawada and Jamui, and it is often associated with other minerals such as quartz, feldspar, and garnet.