Q. With reference to the minerals and districts where they are predominantly found in Bihar, consider the following pairs:

1. Limestone - Kaimur
2. Mica - Nawada
3. Quartz - Bhagalpur
4. Quartzite - Lakhisarai

Which of the above pairs is / are correct?
Answer: 1,2,3 & 4
Notes: The important mineral occurrences in Bihar are limestone in Kaimur (Bhabhua), Monghyr and Rohtas districts; mica in Nawada district; quartz/ silica sand in Bhagalpur, Jamui, Monghyr and Nalanda districts; quartzite in Lakhisarai, Monghyr and Nalanda districts; talc/soapstone/ steatite in Monghyr district. Besides, occurrences of bauxite in Monghyr and Rohtas districts; china clay in Bhagalpur and Monghyr districts; felspar in Gaya, Jamui and Monghyr districts; fireclay in Bhagalpur and Purnea districts; gold in Jamui district; granite in Bhagalpur, Gaya, Jahanabad and Jamui districts; iron ore (hematite) in Bhagalpur district; iron ore (magnetite) in Gaya and Jamui districts; lead-zinc in Banka and Rohtas districts and pyrites in Rohtas district are reported. [Source: Indian Bureau of Mines]