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". |
From inside the book
Results 1-3 of 13
Page 33
... Biotite granodiorite ( 635 Ma ) Biotite gneiss ( diorite ) ( 700 Ma ) Amphibolite ( 765 Ma ) Pegmatite , aplite , quartz and feldspar veins Amphibolite ( massive ) Pegmatite , aplite , grano- phyre and quartz veins Porphyritic biotite ...
... Biotite granodiorite ( 635 Ma ) Biotite gneiss ( diorite ) ( 700 Ma ) Amphibolite ( 765 Ma ) Pegmatite , aplite , quartz and feldspar veins Amphibolite ( massive ) Pegmatite , aplite , grano- phyre and quartz veins Porphyritic biotite ...
Page 60
... Biotite is often closely associated with the grains of apatite and opaque minerals . Biotite is very strongly pleochroic from pale straw yellow to dark greenish brown . Nepheline almost always occurs as coarse anhedral grains ...
... Biotite is often closely associated with the grains of apatite and opaque minerals . Biotite is very strongly pleochroic from pale straw yellow to dark greenish brown . Nepheline almost always occurs as coarse anhedral grains ...
Page 65
... Biotite granodiorite ( 635 Ma ) Biotite gneiss ( diorite ) ( 700 Ma ) Amphibolite ( 765 Ma ) Pegmatite , aplite , feldspar veins quartz and Amphibolite ( massive ) Pegmatite , aplite , grano- phyre and quartz veins Porphyritic biotite ...
... Biotite granodiorite ( 635 Ma ) Biotite gneiss ( diorite ) ( 700 Ma ) Amphibolite ( 765 Ma ) Pegmatite , aplite , feldspar veins quartz and Amphibolite ( massive ) Pegmatite , aplite , grano- phyre and quartz veins Porphyritic biotite ...
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 | |
3 other sections not shown
Other editions - View all
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