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 31
... plagioclase of the present area are broadly homogeneous in nature . There is no marked optical and chemical differences in the plagioclases of schistose and massive amphibolites . Absence of twinning in most of the plagioclase suggests ...
... plagioclase of the present area are broadly homogeneous in nature . There is no marked optical and chemical differences in the plagioclases of schistose and massive amphibolites . Absence of twinning in most of the plagioclase suggests ...
Page 69
... plagioclase , normative orthoclase decreases with increasing anorthite content . On the other hand , in high temperature plagioclase the potash shows an increase ( Engel et al , 1962 ) . The plagioclase of the schistose amphibolite ...
... plagioclase , normative orthoclase decreases with increasing anorthite content . On the other hand , in high temperature plagioclase the potash shows an increase ( Engel et al , 1962 ) . The plagioclase of the schistose amphibolite ...
Page 70
... Plagioclase from schistose amphibolite Plagioclase from massive amphibolite 1 Ca ( plagioclase ) 2 Fig.10 . Diagram showing distribution of Ca between plagioclase and the host rock . Analysing the petrography and chemistry of the meta ...
... Plagioclase from schistose amphibolite Plagioclase from massive amphibolite 1 Ca ( plagioclase ) 2 Fig.10 . Diagram showing distribution of Ca between plagioclase and the host rock . Analysing the petrography and chemistry of the meta ...
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