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 26
... green horn- blende , showing strong planar orientation , give rise to schistosity of the rock . Hornblende is the chief constitu- ent and make over 80 percent of the rock ( Table — II ) . Rounded crystals of sodic - plagioclase and ...
... green horn- blende , showing strong planar orientation , give rise to schistosity of the rock . Hornblende is the chief constitu- ent and make over 80 percent of the rock ( Table — II ) . Rounded crystals of sodic - plagioclase and ...
Page 28
... green in colour , while actinolites are pale green to light blue . Porphyro- blasts of larger grains of hornblende show distinct pleo- chroism : < = pale green < B = green < y = dark green . On the other hand , the actinolites show ...
... green in colour , while actinolites are pale green to light blue . Porphyro- blasts of larger grains of hornblende show distinct pleo- chroism : < = pale green < B = green < y = dark green . On the other hand , the actinolites show ...
Page 36
... green Pale green to green Pale green to green Pale green to green green green Volume % of hornblende in rock 88.02 66.93 57.49 73.43 43.39 75.96 Number of ions on the basis of 24 ( O , OH ) Si 6.34 6.58 6.60 6.33 6.41 6.60 Aliv 1.66 ...
... green Pale green to green Pale green to green Pale green to green green green Volume % of hornblende in rock 88.02 66.93 57.49 73.43 43.39 75.96 Number of ions on the basis of 24 ( O , OH ) Si 6.34 6.58 6.60 6.33 6.41 6.60 Aliv 1.66 ...
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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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