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 26
... schistose amphibolite and massive amphibolite . An attempt has been made in the present paper to deal with the chemistry of these rocks . The chief constituting minerals viz . horn- blende and plagioclase were also chemically analysed ...
... schistose amphibolite and massive amphibolite . An attempt has been made in the present paper to deal with the chemistry of these rocks . The chief constituting minerals viz . horn- blende and plagioclase were also chemically analysed ...
Page 27
... 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 amphibolite lie in between those of ...
... 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 amphibolite lie in between those of ...
Page 28
... schistose type . = The amount of hornblende always dominates over the actinolite . Replacement of actinolite by hornblende is common . The hornblendes are deep green in colour , while actinolites are pale green to light blue . Porphyro ...
... schistose type . = The amount of hornblende always dominates over the actinolite . Replacement of actinolite by hornblende is common . The hornblendes are deep green in colour , while actinolites are pale green to light blue . Porphyro ...
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