Which mineral found in the Koderma and Giridih districts of Jharkhand is used for power industry, paint and pigment industry etc.?

Mica is abundantly found in the Koderma and Giridih districts of Jharkhand (often referred to as the Mica capital of India). Due to its excellent dielectric strength, low power loss factor, insulating properties, and high voltage resistance, it is extensively used in the electrical/power industry, electronics, cosmetics, paints, and pigment industries.