Step 1: Understanding Mica production in India.
Mica is a silicate mineral used in electrical and electronic industries. India is one of the major producers of mica in the world.
Step 2: Identifying the leading state.
Jharkhand leads in mica production, particularly in areas like Koderma, Giridih, and Hazaribagh. These districts have rich mica deposits.
Step 3: Conclusion.
Thus, the leading state in mica production is Jharkhand.