Uranium Mineralization in Leucogranite of Mastipuram Area, Wanaparti District, Telangana — A New Find

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 crus...

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Bibliographic Details
Published in:Journal of the Geological Society of India 2019-04, Vol.93 (4), p.487-491
Main Authors: Rajaraman, H. S., Bisht, B. S., Jeyagopal, A. V., Verma, M. B.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Geology
Hydrogeology
Research Article
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Summary: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.
ISSN:0016-7622
0974-6889
DOI:10.1007/s12594-019-1204-y