Question

A possible hypogene environment indicator of copper mineralisation in neem ka thana copper belt, sikar district, rajasthan, india

Answer 1

Answer:

Neemka Thana copper belt of north Delhi fold belt is known for its unique copper mineralization. This belt is unique as it is the only copper silver mineralised belt, where bornite occurs as predominant copper ore mineral followed by chalcopyrite. Bornite and chalcopyrite dominated Nanagwas block is a high tonnage low grade copper resource of Nimka Thana copper belt within north Delhi fold belt, Rajasthan. The copper mineralization which is mainly restricted within carbonates of Ajabgarh Group of rocks of the Delhi Supergroup (DSG) has been emplaced partly by sedimentary process and partly by the epigenetic process during the second deformation in the area. Nanagwas block has got huge potential to produce a high grade concentrate that could be used for blending with the low grade copper concentrates produced by some of the operating plants in India.

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Answer 2

Khetri is situated at the foothills of the Aravalli Range, which hosts copper mineralization, giving rise to a 80 km long metallogenetic province from Singhana in the north to Raghunathgarh in the south, popularly known as Khetri Copper Belt. The belt comprises of tightly folded Proterozoic metasediments that rest over basement gneisses and is a part of the North Delhi fold belt. Prominent deposits of the belt are: Khetri, Kolihan, Banwas, Chandmari, Dhani Basri, Baniwali Ki Dhani (Neem Ka Thana, Rajasthan). Other deposits are: Dholamala, Akwali, Muradpura - Pacheri (Jhunjhunu, Rajasthan), and Devtalai (Bhilwara, Rajasthan)