Records of the Geological Survey of India, Volume 122, Parts 2-4Geological Survey of India, 1987 - 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 |
Geological Survey of India | 4 |
AIRBORNE MINERAL SURVEY AND EXPLORATION WING 80104 | 80 |
Copyright | |
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amphibolite AMSE Wing analysis Andaman anomalies assemblage bands Barakar Barakar Formation Barren Measures basin belt Bihar biotite block boreholes Calcutta clay coal seams Coal Wing COALFIELD Construction stage geotechnical cores correlation deposits depth district Division-II drilling dykes Eastern Engineering Geology evaluation exploration fault Feasibility stage folds geochemical geological mapping Geology Division geophysical geotechnical investigation Ghosh gneiss Gondwana grained granite granite gneiss grey Group heavy minerals horizon indicated Irrigation LANDSAT limestone lineaments located magnetic metamorphic mica migmatites mineralisation NW-SE occur Orissa pegmatite phyllite PRADESH quartz quartzite Raniganj Raniganj Formation regional river sand sandstone scale schist seam zones sector sediments shale shear zone Shillong sillimanite Singhbhum slope Special Investigation spillway sq km stage geotechnical investigation Stratigraphy strike length structure surface Survey of India thickness toposheet traverses trending Upper upto valley varies veins volcanics West Bengal