Q: What type of pegmatites can be good host for Nb, Ta and Uranium? Whether such pegmatites are originated by magmatic differentiation or hydrothermal processes? In what type of terrain such pegmatites are found? Which age of pegmatite is most favorable for uranium?

Question asked by a researcher from Madagascar

Q: What happens when we exploit all the mineral resources? What happens when deposits around the world start depleting?

Simple answer is yes and no. Mineral resources are finite, however, the resource pool is so vast that it tends to feel like infinite. Reserves are finite at FIXED level of price; FIXED level of input cost, FIXED level of technology, and a fixed level of SOCIETAL demand. Since all these components are continuously changing,Continue reading “Q: What happens when we exploit all the mineral resources? What happens when deposits around the world start depleting?”

Q: What are the signatures on surface, of a hidden copper-gold mineral resource, and which type of terrain should be looked into for it?

Answer: By A. Sundaramoorthy, former Director General, GSI For copper the surface manifestation is development green or bluish green malachite stains and gossan, example Rajpura Dhariba, Rajasthan. For gold associated with other sulphides it is development of yellowish stains and development of gossan with boxwork. If gold occur in native form like Kolar Gold fieldContinue reading “Q: What are the signatures on surface, of a hidden copper-gold mineral resource, and which type of terrain should be looked into for it?”