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 7
... probably the contacts of associated gangue minerals . Some gold grains are found to be associated with quartz and magnetite grains . A typical rectangular large gold grain show the axial ratio of 1 : 10:20 ( approximately ) . Analytical ...
... probably the contacts of associated gangue minerals . Some gold grains are found to be associated with quartz and magnetite grains . A typical rectangular large gold grain show the axial ratio of 1 : 10:20 ( approximately ) . Analytical ...
Page 31
... probably raised by pressure to a slight extent . " He further concluded that a jump in the composition of plagioclase from An , to An , with increa- sing metamorphic grade , i . e . greenschist to almandine- amphibolite facies may be ...
... probably raised by pressure to a slight extent . " He further concluded that a jump in the composition of plagioclase from An , to An , with increa- sing metamorphic grade , i . e . greenschist to almandine- amphibolite facies may be ...
Page 65
... ( Probably equivalent to I.O.S. ) TABLE - II Modal Analyses of Amphibolites ( Volume Percent. N R H A E A -I of Chhotanagpur with the Present Area Sen Gupta and Sarkar ( 1964 ) Dolerite ** Rizvi ( 1966 ) Pegmatites , aplite and quartz ...
... ( Probably equivalent to I.O.S. ) TABLE - II Modal Analyses of Amphibolites ( Volume Percent. N R H A E A -I of Chhotanagpur with the Present Area Sen Gupta and Sarkar ( 1964 ) Dolerite ** Rizvi ( 1966 ) Pegmatites , aplite and quartz ...
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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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