Records of the Geological Survey of India, Volume 114Geological Survey of India, 1984 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 7
... fresh and angular . The non - magnetic fraction generally comprises of euhedral to subhedral garnet , chromite , kyanite , feldspar , fluorite ( ? ) , tourmaline , pyroxene , amphibole , etc. Occasionally lighter mineral grains like ...
... fresh and angular . The non - magnetic fraction generally comprises of euhedral to subhedral garnet , chromite , kyanite , feldspar , fluorite ( ? ) , tourmaline , pyroxene , amphibole , etc. Occasionally lighter mineral grains like ...
Page 27
... fresh in appearance and occur as sills in the gneissic granites . They are highly jointed , but less fractured than the schistose type . Veins of quartz are often seen to have cut across them . K / Ar dating of one sample indicates 765 ...
... fresh in appearance and occur as sills in the gneissic granites . They are highly jointed , but less fractured than the schistose type . Veins of quartz are often seen to have cut across them . K / Ar dating of one sample indicates 765 ...
Page 60
... fresh and show lamellar twinning . The composition of the plagioclase is approximately An13 indicated by extinction angle ( X ' 010 in a Zone perpendicular to 010-11 ° ) , 2Vz = 85 ° 2Vz 85 ° and Nx < refractive index of canada balsam ...
... fresh and show lamellar twinning . The composition of the plagioclase is approximately An13 indicated by extinction angle ( X ' 010 in a Zone perpendicular to 010-11 ° ) , 2Vz = 85 ° 2Vz 85 ° and Nx < refractive index of canada balsam ...
Contents
Integrated Geochemical Approach for Tracing Gold Mineralisation in Parts | 1 |
On Jacobsites from Vizianagaram Manganese Belt of Eastern Ghats Andhra | 15 |
Fossil Hippopotamus from Quaternary Alluvial Deposits of Narmada Valley | 17 |
Copyright | |
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actinolite amphiboles amphibolite analysis ARCHAEAN assemblage associated BANKURA DISTRICT Barakar basement bedrock samples Bihar Biotite boreholes catchment area Chakradharpur chemical colour composition country rocks crystals Dassarma Dolerite Domuhan river Dubrajpur Dubrajpur Formation Electron elements epidiorites geochemical Geol Geological Survey Ghose gneiss Goilkera gold grains Granite gneiss green GSI Type Haast river Hippopotamus hornblende hornblende schist host rock igneous jacobsite Kharswan strip Khatangi hill section magnetite manganese Manuscript received massive amphibolite Mayapur McCluskieganj meta-basic rocks metamorphic metres south mica schists mineralisation minerals namadicus Narmada Neogene nepheline syenite occur palaeindicus Pegmatite pelite phyllites plagioclase Porphyritic present area quartz Quartzite Quaternary ratios Rupatganj schist schistose schistose amphibolite sediments shale Singhbhum Singhbhum Shear Zone specimens stratigraphic stream sediment-concentrate samples sulphide Surv Survey of India Table-II Talapatra texture three strips values vein-quartz veins West Bengal X-Ray