Records of the Geological Survey of India, Volume 114Geological Survey of India, 1979 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 25
... Hornblende Schist : They are essentially a mono - minerallic rock and contain hornblende as the major component with minor amounts of quartz and albite . They are characterised by high lime and magnesia , low amount of alumina and ...
... Hornblende Schist : They are essentially a mono - minerallic rock and contain hornblende as the major component with minor amounts of quartz and albite . They are characterised by high lime and magnesia , low amount of alumina and ...
Page 26
... hornblende schist , 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 ...
... hornblende schist , 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 ...
Page 28
... 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- blasts of larger grains 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- blasts of larger grains of ...
Contents
Integrated Geochemical Approach for Tracing Gold Mineralisation in Parts of | 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 amphibolites analysis Archaean assemblage BANKURA DISTRICT Barakar Barakar Formation basement bedrock samples Bihar biotite boreholes calcite catchment area Chakradharpur chemical Chittorgarh coarse colour composition country rocks crystals Dassarma deposit Dubrajpur Dubrajpur Formation Electron elements epidiorites fossils geochemical Geol Geological Survey Ghose gneiss Goilkera granite gneiss GSI Type Hippopotamus hornblende hornblende schist host rock jacobsite Kharswan Khatangi hill section lithological magnetite manganese Manuscript received massive amphibolites McCluskieganj meta-basic rocks metamorphic metres mineralisation minerals namadicus Narmada nepheline syenite Nimbahera Nimbahera limestone occur palaeindicus phyllitic plagioclase Plate present area quartz Quartzite Quaternary Rajmahal Hills Records Vol river Rupatganj Sah and Shah Sawa 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 values vein-quartz veins Vindhyan West Bengal X-Ray Λ Λ