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
... actinolite , hornblende and plagioclase ( An - 1 ) . Quartz , epidote , sphene , ore , biotite and chlorite occur as accessories . The mineral assemblages of the two types of amphibolites ( Table II ) correspond to the low temperature ...
... actinolite , hornblende and plagioclase ( An - 1 ) . Quartz , epidote , sphene , ore , biotite and chlorite occur as accessories . The mineral assemblages of the two types of amphibolites ( Table II ) correspond to the low temperature ...
Page 28
... 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 show distinct pleo- chroism ...
... 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 show distinct pleo- chroism ...
Page 65
... actinolite schist ( ultramafic parentage ) Chlorite schist , mica schists , garnet- mica schists , sillimanite- garnet- graplite schists , graphite schists Actinolite schist ( intrussive ) Chlorite schist , muscovite- biotite chlorite ...
... actinolite schist ( ultramafic parentage ) Chlorite schist , mica schists , garnet- mica schists , sillimanite- garnet- graplite schists , graphite schists Actinolite schist ( intrussive ) Chlorite schist , muscovite- biotite chlorite ...
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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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