Records of the Geological Survey of India, Volume 131, Parts 2-3Government of India, 1996 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 100
... veins present are parallel to S , or are discordant to both the cleavages and formational contacts . The old workings ( about 55 nos . ) occur all over the area and may or may not be associated with quartz veins . Studies have indicated ...
... veins present are parallel to S , or are discordant to both the cleavages and formational contacts . The old workings ( about 55 nos . ) occur all over the area and may or may not be associated with quartz veins . Studies have indicated ...
Page 4
... veins . The banded gneiss , mica gneiss , augen gneiss , porphyritic granite gneiss , gneissose granite , granitoids , pegmatite and aplites con- stitute the Chhotanagpur Granite Gneiss . Xenoliths of CGC are seen in older ...
... veins . The banded gneiss , mica gneiss , augen gneiss , porphyritic granite gneiss , gneissose granite , granitoids , pegmatite and aplites con- stitute the Chhotanagpur Granite Gneiss . Xenoliths of CGC are seen in older ...
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... vein / veinlets of smoky gray quartz . These smoky grey quartz veins have traversed the ultramafic rocks at places . Some of them are showing fine disseminations of pyrite , chalcopyrite . Limonitic encrustations are also noted ...
... vein / veinlets of smoky gray quartz . These smoky grey quartz veins have traversed the ultramafic rocks at places . Some of them are showing fine disseminations of pyrite , chalcopyrite . Limonitic encrustations are also noted ...
Contents
COAL WING | 128 |
Geophysics Division | 209 |
Operation West Coast I | 239 |
Copyright | |
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amphibolite analysis anomaly bands Barakar Barakar Formation basin belt Bihar biotite block borehole carried chlorite clay Coalfield Code core covered Cruise delineated depth Director district Division drilling Dzongkhag east East Singhbhum eastern exploration for coal facies fault feldspar field season folds foliation garnet geochemical geoenvironmental GEOLOGICAL MAP geophysical geotechnical investigation gneiss Gondwana grade granite granite gneiss granulite grey Group heavy mineral INDEX indicated intersected Kamthi lignite limestone located Madhya Pradesh magnetic metamorphism mineralised zone nala occur Orissa OVERVIEW pegmatite phyllite plagioclase Plate programme Project prospect Purulia quartz quartz veins quartzite range Raniganj REGIONAL EXPLORATION ridge river samples were collected sand sandstone scale schist seabed sector sediments shale shallow shear zone Singhbhum slope soil spillway sq km stage geotechnical investigation structural sulphide surface survey Talchir thickness Toposheet traverses trending ultramafic upto Valley varies volcanics West Bengal