Explain the distribution of mica mineral in India.

India tops in the world in the production of mica. The two types of mica ores found in India are:

a. Muscovite and

b. Biotite

Muscovite is also called as White Mica whereas Biotite is called as Pink Mica.

Some blocks of mica are found in:

1. Nellore, Guntur, Kadapa – Andhra Pradesh

2. Bhilwara, Ajmer, Jaipur, Udaipur, Tonk – Rajasthan

3. Hazaribagh, Kodarma, Giridih, Dhanbad, Bokaro, Palamau – Jharkhand.

4. Gaya, Begusarai, Navada - Bihar

Petroleum is a fossil fuel. It is obtained from Sedimentary rocks below the surface of the earth. The states of Maharashtra, Gujarat, Rajasthan, and Gujarat accounts for nearly ninety percent of the country’s petroleum production.

Petroleum reserves are located at Brahmaputra and Surma Valleys of Assam, Sunderban delta of West Bengal, eastern coastal areas of Odisha, Rajasthan, Saurashtra, Central and northern parts of Gujarat, Krishna-Godavari basin and Cauvery basin.

The crude oil which is obtained gets refined to form petrol, kerosene, and diesel in twenty-four refineries at Guwahati, Vadodara, Haldiya, Mathura, Digboi and Jamnagar. Digboi is the oldest refinery in India.