Records of the Geological Survey of India, Volume 122, Parts 2-4Geological Survey of India, 1989 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 49
... veins are emplaced along the plane of schistosity and in the domains of F2 folding where crenulation is well ... veins having disseminations of chalcopyrite and pyrite . Such veins show ultrafine specks of gold when examined under high ...
... veins are emplaced along the plane of schistosity and in the domains of F2 folding where crenulation is well ... veins having disseminations of chalcopyrite and pyrite . Such veins show ultrafine specks of gold when examined under high ...
Page 50
... veins occurring away from the mineralised zone are found to be devoid of fluid inclusions . On the other hand , quartz veins in the mineralised zone show well developed mono- , bi- and polyphase fluid inclusions . Freezing experiments ...
... veins occurring away from the mineralised zone are found to be devoid of fluid inclusions . On the other hand , quartz veins in the mineralised zone show well developed mono- , bi- and polyphase fluid inclusions . Freezing experiments ...
Page 209
... vein varies from a few mm to a maximum of 0.5 m . Quartz veins show better concentration of tungsten as compared to the pegmatite veins . Tin was also identified in one of the grab sample of pegmatite of this zone . Samples were ...
... vein varies from a few mm to a maximum of 0.5 m . Quartz veins show better concentration of tungsten as compared to the pegmatite veins . Tin was also identified in one of the grab sample of pegmatite of this zone . Samples were ...
Contents
CENTRAL HEADQUARTERS 179 | 1 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
COAL WING 105 174 | 105 |
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amphibolite analysed anomaly anorthosite assemblage bands Barakar Barakar Formation basin bed rock belt Bhuban Bihar BIHAR Code biotite block boreholes Calcutta carbonatite carried clay coal seams Coal Wing COALFIELD Construction stage geotechnical cores covered dam axis deposits depth Disang district drilling dykes Eastern Engineering Geology evaluation fault Feasibility stage field season folds geochemical geological mapping Geology Division-II Ops geophysical geotechnical investigation gneiss Gondwana grade grained granite granite gneiss grey Group grouting horizon indicate irrigation limestone lineaments located magnetic metamorphic mica migmatites mineral mineralisation nala occur Orissa pegmatite phyllite PPB PPB PRADESH quartz quartzite Quaternary Raniganj Reservoir Scheme river rock types samples sand sandstone scale schist sediments shale shear zone Shillong siltstone Singhbhum slope Special Investigation spillway sq km stage geotechnical investigation structure surface Survey of India Talchir thickness toposheet traverses trending Upper upto valley varies veins volcanics West Bengal