Uranium Mineralization in Leucogranite of Mastipuram Area, Wanaparti District, Telangana – A New Find
Authors
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Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad - 500 016
H.S. Rajaraman -
Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad - 500 016
B.S. Bisht
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Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad - 500 016
A.V. Jeyagopal
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Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad - 500 016
M. B. Verma
DOI:
https://doi.org/10.1007/s12594-019-1204-yKeywords:
No KeywordsAbstract
The NNW-SSE trending leucogranites in and around Mastipuram, Wanaparthi district, Telangana are intrusive into Peninsular Gneissic complex. The leucogranite is metaluminous to mildly peraluminous, alkali-feldspar granite with I-type signatures, probably formed from a fractionated melt involving crustal component. Magmatic and hydrothermal contributions are supported by wide range of U/Th ratios in mineralized samples, which also show Na-enrichment as compared to non-mineralized leucogranites. Average U and Th contents and U/Th ratio in mineralized leucogranite is 541ppm, 147 ppm and 2.85, respectively. Main ore mineral is uraninite and its altered form - gummite, while secondary uranium minerals such as schoepite, uranophane and haiweeite are also identified in leucogranite by XRD. Reconnoitory drilling of ten boreholes have confirmed sub-surface continuation of uranium mineralization with varying width of 1m to 31m at vertical depth of about 50m. Thus, the leucogranites bordering Gadwal schist belt around Mastipuram forms a very potential target.
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