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 25
... major component with minor amounts of quartz and albite . They are characterised by high lime and magnesia , low amount of alumina and potash , and presence of normative nepheline . Genetically they are related to an ultrabasic ...
... major component with minor amounts of quartz and albite . They are characterised by high lime and magnesia , low amount of alumina and potash , and presence of normative nepheline . Genetically they are related to an ultrabasic ...
Page 27
... major constituents . The schistose amphibolites are richer in silica , alumina and potash content than the other metabasic rocks ( Table - III ) . They are depleted in ferrous iron , soda and magnesia . The plots of schistose ...
... major constituents . The schistose amphibolites are richer in silica , alumina and potash content than the other metabasic rocks ( Table - III ) . They are depleted in ferrous iron , soda and magnesia . The plots of schistose ...
Page 50
... major elements present are Mn , Fe , Si , Ca , Ti and K. Peaks from gold are also present but this is due to coat- ing of the nodules by gold during sample preparation for SEM study . A semi - quantiative analysis of the nodules has ...
... major elements present are Mn , Fe , Si , Ca , Ti and K. Peaks from gold are also present but this is due to coat- ing of the nodules by gold during sample preparation for SEM study . A semi - quantiative analysis of the nodules has ...
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 |
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Common terms and phrases
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