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 3
Page 10
... felspar rock 2/77 10 10 14 8/77 40 25 33 30 20 < 10 110 30 < 10 120 130 5030 100 130 300 9080 40 na Quartzite na Greenish yellow shale 15 11/77 30 10 16 13/77 . 10 10 230 20 < 10 25 < 10 000 40 70 88 80 130 250 na Grey shale 90 140 250 ...
... felspar rock 2/77 10 10 14 8/77 40 25 33 30 20 < 10 110 30 < 10 120 130 5030 100 130 300 9080 40 na Quartzite na Greenish yellow shale 15 11/77 30 10 16 13/77 . 10 10 230 20 < 10 25 < 10 000 40 70 88 80 130 250 na Grey shale 90 140 250 ...
Page 59
... felspar and nepheline are clearly discernible in the hand specimens . PETROGRAPHY AND PETROCHEMISTRY OF THE SYENITES The syenites are composed essentially of plagioclase , K - felspar and biotite with minor amounts of apatite and opaque ...
... felspar and nepheline are clearly discernible in the hand specimens . PETROGRAPHY AND PETROCHEMISTRY OF THE SYENITES The syenites are composed essentially of plagioclase , K - felspar and biotite with minor amounts of apatite and opaque ...
Page 60
... felspar almost always occurs as large anhedral grains which may be described as microcline microper- thite . The intergrown albite is uniformly distributed as films and belbs within the host indicating the probable origin of the texture ...
... felspar almost always occurs as large anhedral grains which may be described as microcline microper- thite . The intergrown albite is uniformly distributed as films and belbs within the host indicating the probable origin of the texture ...
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