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WEST BENGAL SIKKIM A N ISLANDS
Report of investigation for rare metal mineralisation within pegmatite
Preliminary search for gold associated with sulphide occurrences
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activity associated bands bank base basic basin belt Bihar biotite block bodies boreholes carried clay Code collected Complex comprising construction continued covered depth detailed Director district Division drilling east eastern Engineering exploration exposed fault field field season flood fold Formation GEOLOGICAL MAP geophysical geotechnical gneiss gold grade grained granite granite gneiss grey Group GSI Rec Hills identified indicate land lineament located major medium mineralisation minerals nature observed occurs Operation Orissa OVERVIEW phyllite places Pleistocene potential present Project proposed quartz quartzite range Region reported river road rocks samples sand sandstone scale schist sector sediments sequence sericite shale shear zone Singhbhum slope soil stage stone stream strike structure suggested sulphide Surface survey taken thick Toposheet trending unit values varies veins volcanics West Bengal western