India is the world's largest producer of mica, accounting for about 60-70% of global production. The mica belt in India stretches through Jharkhand, Bihar, Andhra Pradesh, Telangana, and Rajasthan, with Kodarma (Jharkhand) and Nellore (Andhra) being major mining centers. India has both muscovite and phlogopite varieties of high-quality mica.