Current Science

B. Priyatham Kumar ¹, B. Vijayanand ¹, K. K. Pandey ¹, Amit Majumdar ¹, K. V. G. Krishna ², R. Mohanty ²

Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Nagpur 440 001, IN
2 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN

Abstract

Survey and exploration for atomic minerals have been carried out in the past couple of decades by the Atomic Minerals Directorate for Exploration and Research (AMD) in parts of migmatitic terrain of erstwhile Sarguja district, Chhattisgarh and Sonbhadra district, Uttar Pradesh (UP), India.

Full Text

   

Sikta Patnaik ¹, Amit Kumar Jain ¹, Subhajit Pandey ¹, Sanku Usha Kiran ¹, K. K. Pandey ¹

Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Hyderabad 500 016, IN

Abstract

The Vindhyan sediments overlying the Bundelkhand granite complex have conducive attributes for hosting unconformity-type uranium mineralization. In the Kaimur sandstones of the Vindhyan Supergroup overlying the basement Bundelkhand granites, uranium mineralization hosted by subfeldspathic arenite intercalated with shale has been observed. Uranium minerals are associated with organic matter and pyrite present in arenite. Globular organic matter disseminated in the sediments shows moderate reflectance under reflected light. The average total organic carbon content in organic matter-rich rock samples is 1.1%. It has undergone excessive thermal maturation and high dehydrogenation reflected from a low H/C ratio. Raman spectral analysis indicates that the organic matter contains amorphous carbon.

Keywords

Amorphous carbon, organic matter, radioactivity, sediments, uranium minerals.

Full Text