Explanation:
Carnotite, mineral contains vanadium in it. It contains, about 53 per cent uranium, 12 per cent vanadium, and trace amount of radium. It is radioactive, bright-yellow, soft and earthy
vanadium mineral that is an important source of uranium. 7. (2) In chalcopyrite sets of elements is present as \(\mathrm{\mathrm{Cu}, \mathrm{Fe}, \mathrm{S}}\). It is a copper iron sulphide mineral that crystallises in the tetragonal system. It has the chemical formula \(\mathrm{\mathrm{CuFeS}_{2}}\). It has a brassy to golden yellow colour and a hardness of 3.5 to 4 on the Mohr scale. Its streak is diagnostic as green tinged black.