Which of the following statements is/are correct?

a. Mica is made up of a series of plates or leaves. It splits easily into thin sheets. b. Its deposits are found in the northern edge of the Chota Nagpur plateau. Koderma Gaya – Hazaribagh belt of Jharkhand is the leading producer. c. Mica has excellent dielectric strength, low power loss factor, insulating properties and resistance to high voltage.