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AIRBORNE MINERAL SURVEY AND EXPLORATION WING
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alluvium amphibolite Andhra Pradesh Asstt bands basalt basin bauxite Bihar biotite block bore holes boreholes Calcutta carried charnockite chert chert member clay coal Coalfield copper Deccan Trap Delhi deposits depth Director district dolerite dolomite drill holes dykes east electrical logging exploratory fault felspar folds foliation formation fossil garnetiferous geochemical geological mapping Geological Survey Geologist Geologists Jr geophysical glacier gneiss Gondwana grade grained granite gneiss grey Groundwater Himalaya indicated investigation Jaipur laterite limestone Lucknow metres mica million tonnes mineralisation minerals moraine nala occur pegmatite phosphate phyllite pits plagioclase Pradesh Project quartz quartz veins quartzite Rajasthan Region river rock types S/Shri samples sand sandstone scale schist seams sediments shales Sharma Shri Singh Sinha snout sq.km Srivastava strike length studies Survey of India thickness thin toposheet Trap Flow trending tunnel upto valley varies Vindhyan