Other basins

Uranium investigations have been carried out in 1980s in other middle to late Proterozoic basins in central Indian craton like Indravati and Abujhmar [39,40] in the Bastar district of Madhya Pradesh and Khairagarh basin [41] in the Bhandara district of Maharashtra. Many of

these areas need to be searched again for both stratabound and unconformity types as the basement rocks are anomalously uraniferous with evidence of remobilisation of uranium into the basin.

Amongst the early Proterozoic basins like Aravalli and Delhi where hydrothermal uranium mineralization is hosted by the calcareous sediments as at Umra and Udaisagar [8,42,43,44,45] and all along the albitite zone [46,47] of northern Rajasthan, there are possibilities of finding better grades provided one can overcome the opaque areas in our knowledge of uranium mineralization and its control (Fig. 6).

Each deposit is a type by itself and is seldom repeated in the Earth’s history with exact similarities and dissimilarities. Exploration inputs in India are, therefore being judiciously directed to achieve the goal of national self-sufficiency in uranium production.

ACKNOWLEDGEMENTS

The author is highly grateful to Dr. R. Chidambaram, Chairman, Atomic Energy Commission, India and Secretary, Department of Atomic Energy for the permission to attend the Technical Meeting (TM) and present this paper. The data presented have been drawn from the detailed work of large number of scientists in the Atomic Minerals Directorate for Exploration and Research and I thankfully acknowledge their contributions. Dr. R. Dhanaraju and Shri A.B. Awati and his team helped in editing the text and they deserve a special mention.

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