Bastnaesite from Kanigiri granite, Prakasam district, Andhra Pradesh |
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Authors: | G Nagendra Babu M Sai Baba Mary K Kumar Yamuna Singh P V Ramesh Babu P S Parihar |
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Institution: | 159. Department of Atomic Energy, Atomic Minerals Directorate for Exploration and Research, Begumpet, Hyderabad, 500 016, India
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Abstract: | For the first time we report bastnaesite and hydroxyl bastnaesite (lanthanum cerium fluoro-carbonate) from the Kanigiri granite. The host granitoids are of A-type and vary in composition from quartz syenites to peralkaline granites. Rare metal and rare earth-bearing minerals identified by X-ray diffraction (XRD) studies in Kanigiri granite are bastnaesite and hydroxyl bastnaesite, besides columbite-tantalite, monazite, fergusonite, thorite and euxenite. Petromineralogical studies have also revealed the presence of bastnaesite. The presence of bastnaesite in Kanigiri granite suggests that the host felsic rocks may also form a potential source for light rare earth mineral, bastnaesite, apart from the already known rare-metal minerals. |
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