Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Rajan B. Jain ¹, O. P. Yadav ¹, M. Rahman ¹, S. Thippeswamy ², S. Fahmi ¹, D. K. Sharma ¹, Govind Singh ¹

Affiliations
1 Atomic Minerals Division, J.L.N. Marg, Uniara Garden, Jaipur - 302 004, IN
2 Atomic Minerals Division, Nagarabhavi, Bangalore, IN

Abstract

A partly concealed radioactive alibitized pegmatoid/quartz albitite body (1200 m x 0.5 to 20 m) containing 0.010 to 0.190% U₃O₈ and 0.007 to 0.076% ThO₂ and about 20 brick red coloured albitite lenses varying in dimension from 13 m x 7 m to 220 m x 12-30 m and containing 0.022 to 3.50% U₃O₈ and 2 are described at Banjaron Ki Dhani, new Maonda in north Rajasthan. Davidite, brannerite, rutile, anatase, zircon, monazite and traces of uraninite have been identified in the albitites. A metasomatic origin for the albitites is suggested. The distribution of albitites along NE-SW to NW-SE and E-W trending weak structural planes and the coincidence of 'Albitite Line' with Kaliguman lineament, demonstrates the tectonic control of albitization.

Keywords

Geochemistry, Albitite, Soda Metasomatism, Radioactivity, Rajasthan.

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