Which districts of Jharkhand has the highest deposits of mica mines?

India is one of the world's largest producers of mica, which is used by major global brands in the car and building sectors, electronics and make-up. Bihar, Jharkhand, Rajasthan and Andhra Pradesh are the top mica producing states in the country. Giridih and Koderma districts of Jharkhand are rich in mica mineral.