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On Jacobsites from Vizianagaram Manganese Belt of Eastern Ghats Andhra
Fossil Hippopotamus from Quaternary Alluvial Deposits of Narmada Valley
Mineralogy and Chemistry of the MetaBasic Rocks Around McCluskieganj
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amount amphiboles amphibolites analysis appears assemblage associated average Bankura Barakar basement Bihar biotite chemical collected colour composition contains crystals deposit depth detailed distribution district Dubrajpur Formation east Eastern Electron elements exposed Formation geochemical Geol Geological Survey gneiss gold grains granite green hornblende hornblende schist increase indicated jacobsite Khatangi hill limestone Lower manganese massive amphibolites meta-basic metamorphic metres minerals namadicus Narmada nepheline Nimbahera observed occur plagioclase Plate Pleistocene present quartz Quartzite range ratios recorded region representative respective river rocks samples sand sandstone schist schistose schistose amphibolite sediments sericite shale shear zone specimens stratigraphic stream strip structural surface Survey of India syenites texture thick thin tion types unit Upper valley values varies various vein-quartz veins West Bengal X-Ray