Question

Consider the following statements :
1.The main diamond bearing areas in India are the Panna belt in MadhyaPradesh
2. Mannargudi of Tamilnadu is known for its manganese deposits.

Which of the above statements is/are not correct?

• A. a) Only 1
  
• B. b) Only 2
  
• C. c) Both
  
• D. d) None

Answer 1

The correct option is B b) Only 2


Answer-b
Diamond deposits occur in three types of geological settings such as kimberlite pipes, conglomerate beds and alluvial gravels. The main diamond bearing areas in India are the Panna belt in Madhya Pradesh, Munimadugu-Banganapalle conglomerate in Kurnool district, Wajrakarur Kimberlite pipe in Anantapur district and the gravels of Krishna river basin in Andhra Pradesh.
Reserves have been estimated only in the Panna belt and Krishna Gravels in Andhra Pradesh. The total in situ reserves are about 26, 43,824 carats. There are conditional resources of 19, 36,512 carat. The new kimberlite fields are discovered recently in Raichur-Gulbarga districts of Karnataka.
The lignite reserves in India are estimated at around 36 billion tonnes, of which 90% occur in the southern State of Tamil Nadu. 4150 million tonnes (mt) spread over 480 sq km is in the Neyveli Lignite fields in Cuddalore District of which around 2360 Mt have been proved.In Mannargudi and East of Veeranam, geological reserves of around 22661.62 Mt and 1342.45 mt of lignite have been estimated respectively.