Records of the Geological Survey of India, Volume 113, Parts 1-3The Survey, 1983 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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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 255
... veins traverse the gneisses . Two zones of quartz veins were demarcated with 3 major and 2 minor veins trending in NNE - SSW direction and dipping eastward moderately to steeply . Thin streaks of galena were noticed in the major quartz vein ...
... veins traverse the gneisses . Two zones of quartz veins were demarcated with 3 major and 2 minor veins trending in NNE - SSW direction and dipping eastward moderately to steeply . Thin streaks of galena were noticed in the major quartz vein ...
Page 3
... vein type sulphides are that the veins are essentially comprised of softer sulphide minerals ( Plate . IV , Fig . 1 ) , such as , sphalerite , galena and pyrrhotite in the form of mono - mineralic / bi - minera- lic / poly - mineralic veins ...
... vein type sulphides are that the veins are essentially comprised of softer sulphide minerals ( Plate . IV , Fig . 1 ) , such as , sphalerite , galena and pyrrhotite in the form of mono - mineralic / bi - minera- lic / poly - mineralic veins ...
Contents
OFF SHORE MINERAL EXPLORATION AND MARINE GEOLOGY DIVISION | 63 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 75 |
VI EASTERN REGION 165 | 165 |
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amphibolite analysis Andhra Pradesh anomaly zones apatite Asstt bands basin belt Bihar biotite block boreholes Calcutta carried chlorite clay Coalfield coarse collected core covered Deccan basalts Deccan Trap deposits depth dips Director DISTRICT Division dolomite drilling Dubrajpur exposed fault folds foliation Formation fossils geochemical Geol geological mapping Geological Survey Geologist Geologist Jr geotechnical Ghosh gneiss Gondwana grade granite gneiss grey Group Gupta indicated laboratory laterite limestone lineament lineation located logging Madhya Pradesh magnetic magnetite mapped an area metamorphism metres migmatites million tonnes mineralisation minerals nala occur Orissa pegmatite phyllite Plate Project pyrite quartz quartz veins quartzite Rajasthan Region river rock types S/Shri samples sandstone scale schist schistosity sector sequence shale shear zone Shri Singh Singhbhum sq km Srivastava strike length structural studies sulphide surface Survey of India thickness tion toposheet traverses trending upto volcanics