Records of the Geological Survey of India, Volume 113Geological Survey of India, 1984 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 179
... veins . The individual pegmatite veins vary from 10 m to 200 m in length and from 5 m to 30 m in width . Indistinct zoning is fairly common in the pegmatites having wide columbite has been recorded in the form of loose grains along the ...
... veins . The individual pegmatite veins vary from 10 m to 200 m in length and from 5 m to 30 m in width . Indistinct zoning is fairly common in the pegmatites having wide columbite has been recorded in the form of loose grains along the ...
Page 254
... veins and lenses within quartz micaschist and are composed of plagioclose felspar , quartz and mica . A length of 55 ... veins . The rocks have a general NNW - SSE trend with steep westerly dips . The pegmatites are generally emplaced ...
... veins and lenses within quartz micaschist and are composed of plagioclose felspar , quartz and mica . A length of 55 ... veins . The rocks have a general NNW - SSE trend with steep westerly dips . The pegmatites are generally emplaced ...
Page 334
... veins , trending NW - SE and traversing metalavas , 2km . SSE of Jambia Dongar ( 56 M / 13 ) . They have also located a 50 cm . thick quartz vein containing molybdenite and scheelite ; this vein traverses the hornblende schists about 8 ...
... veins , trending NW - SE and traversing metalavas , 2km . SSE of Jambia Dongar ( 56 M / 13 ) . They have also located a 50 cm . thick quartz vein containing molybdenite and scheelite ; this vein traverses the hornblende schists about 8 ...
Contents
OFF SHORE MINERAL EXPLORATION AND MARINE GEOLOGY DIVISION | 63 |
Performance of the Geological Survey of India during 197576 F S | 66 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 75 |
Copyright | |
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amphibolite analysis Andhra Pradesh Asstt bands Banerjee basalt basemetal basin belt block boreholes Calcutta chalcopyrite charnockite Circle clay COALFIELD covering an area Deccan Trap deposits depth dips Director DISTRICT dolomite drill cores dykes exposed fault folds foliation Formation fossils geochemical geological mapping Geologist Jr geophysical geotechnical geothermal Ghosh gneiss Gondwana grade granite grey Group Gupta Headquarters Hydel indicated investigation Karnataka Kumar laboratory laterite limestone lineament located logging Lucknow MADHYA PRADESH magnetic magnetite Maharashtra mapped an area meeting metres migmatite million tonnes mineral mineralisation nala NE-SW NW-SE occur pegmatite phyllite pitting power house Project quartz quartz veins quartzite Quaternary Rajasthan Region river rock types S/Shri samples were collected sandstone scale schist sediments shale Sharma sheet Shri sillimanite Singh Sinha spillway sq km sq km area Srivastava strike length studies sulphide surveys Tamil Nadu thickness tion toposheet traverses trending tunnel upto varying