Published Paper Details:

Precambrian basement rocks of Karnataka composed of active and dynamic geological settings with economic mineral deposits and variety of gemstones. These gemstones were noticed all along the lithological contacts of Green stone & Schist Belts, younger granites and granitoids of Dharwar Craton. Corundum is a rock-forming mineral occurs in igneous, metamorphic and sedimentary rocks which represent rich amount of Aluminium oxides (Al2O3) in hexagonal crystal structure. The extreme hardness of corundum makes an excellent abrasive for industrial uses. The present study aims to characterize the spectral behavior of Corundum and associated rocks using Spectro-radiometer instrument calibrating in between 400-2500 nm wavelength. Spectro-radiometer instrument records 10 nm resolution data to bring out diagnostic features on lithological contacts for better discrimination of gemstones and altered minerals. The final results highlight the spectral characters of corundum and associated rocks for better mapping and exploration in similar terrains of Karnataka State.