RAS question
The Degana tungsten (wolframite) deposit is located in which district of Rajasthan?
Correct answer: (A) Nagaur.
The Degana tungsten, or wolframite, deposit is located in Nagaur district of Rajasthan.
Explanation
Degana is the district clue. The Indian Bureau of Mines note on tungsten states that tungsten occurs either as scheelite or wolframite, and it specifically identifies production experience from the Degana area of Nagaur district, Rajasthan. The Indian Bureau of Mines also mentions tungsten-bearing areas in Sirohi, including Balda, Dewa-Ka-Bera and Udwarya. Rajasthan has more than one tungsten locality, but the Degana tungsten-wolframite association points to Nagaur, not to Sirohi or any other listed district.
Why the other options are wrong
- (B) Sirohi is linked with tungsten localities such as Balda and Udwarya, and with wollastonite in Rajasthan mineral mapping, but it is not the district of the Degana deposit.
- (C) Udaipur is better known in this context for zinc, while the Indian Bureau of Mines places Degana in Nagaur district.
- (D) Pali has mineral occurrences, but the tungsten-wolframite deposit named Degana is identified with Nagaur, not Pali.
Concept
This tests Rajasthan's mineral geography, especially the exam habit of pairing a mineral deposit with its district. It recurs in RAS because small place-name distinctions such as Degana versus Balda can change the answer.