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

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Radiometric survey along the Goddaru Vanka stream near Rangampeta of North Arcot district, TamilNadu has brought to light an appreciable concenuation of rare-earths (RE)- and yttrium-minerals (allanite, monazite and xenotime) in the stream sands with feed samples assaying 0.034-0.35% CeO, and 0.003-0.34% Y2, O3, and their non-magnetic tabIe concentrates (1-10 wt% of feed) assaying 1.13-10.30% CeO2 and 0.25-1.37% Y2O3. Of the different heavy minerals, magnetite shows positive correlation (r = 0.93 to 0.99) with allanite, xenotime, total RE- and Y-minerals, total heavy minerals, CeO2, and Y2,O3, of the feed samples. The results also confirm the effectiveness of radiometric and magnetic surveys in delimiting RE- and Y-minerals in the stream sands.

Keywords

Re- and Y-Minerals, Stream Sands, Rangampeta, Tamil Nadu.
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