Question

Where are gold ores mined in India?
A. Kolar (Karnataka)
B. Khetri (Rajasthan)
C. Panna (Madhya Pradesh)
D. Katni (Madhya Pradesh)

Answer 1

Hint: Ores within which gold transpires in chemical conformation with additional components are relatively intermittent. They comprise calaverite, sylvanite, nagyagite, petzite, and krennerite.

Complete answer: There are 2 major categories of arsenical gold ores of fiscal worth. These are the enormous base metal sulfides with arsenical gold (i.e. the lead-zinc Olympias deposit, Greece) and arsenical gold ores without the occurrence of base metals. Enormous base metal arsenical gold ores are intermittent, and there are only a few deposits within the world. An archetypal arsenical gold ore comprises arsenopyrite as the key arsenic mineral. However, some arsenical gold ores, such as those from Nevada in the USA (Getchel deposit), consist of realgar and orpiment as the key arsenic-bearing minerals. Pyrite, if existing in arsenical gold ore, may contain some gold as minuscule enclosures. In the year 1956, the Kolar gold mines were nationalized and thus provided a total of over 900 tonnes of gold. They were closed by the Indian government on February 28, 2001, for conservational and fiscal motives; food, water, and shelter were infrequent, and manufacture did not rationalize the venture.

Thus, option (A) is correct.

Note: Kolar Gold Fields (K.G.F.) is a mining region in K.G.F. taluk (township), Kolar district, Karnataka, India. It is headquartered in Robertsonpet, where the workforces of Bharat Gold Mines Limited (BGML) and BEML Limited (formerly Bharat Earth Movers Limited) and their families live. The town is famous for gold mining for more than a century. The mine closed on February 28, 2001, due to a descent in gold prices, despite gold still being present. One of India's primary power-generation units was constructed in 1889 to support mining procedures. The mine complex accommodated some particle physics experiments between the 1960s and 1992.