Records of the Geological Survey of India, Volume 129, Parts 3-4Government of India, 1994 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 150
... quartzite and veinlets of quartz to be the major primary zones of interest for search of gold mineralisation . These zones are exposed inter- mittently all along the sheared contact of Dhalbhum phyllite and tuffaceous rocks between ...
... quartzite and veinlets of quartz to be the major primary zones of interest for search of gold mineralisation . These zones are exposed inter- mittently all along the sheared contact of Dhalbhum phyllite and tuffaceous rocks between ...
Page 152
... quartzite , silicified quartzite and acti- nolite - chlorite schist showing tuffaceous character and belongs to the Singhbhum metsedimentary group . These units have been traversed by quartz veins and basic rocks . The strike of the ...
... quartzite , silicified quartzite and acti- nolite - chlorite schist showing tuffaceous character and belongs to the Singhbhum metsedimentary group . These units have been traversed by quartz veins and basic rocks . The strike of the ...
Page 5
... quartzite ( black quartzite is the facies variation of lower phyllite ) , black slate , upper phyllite and quartzite . Truncated surfaces of current bedding in quartzite suggest that quartzite is the top most lithounits of the Shillong ...
... quartzite ( black quartzite is the facies variation of lower phyllite ) , black slate , upper phyllite and quartzite . Truncated surfaces of current bedding in quartzite suggest that quartzite is the top most lithounits of the Shillong ...
Contents
WEST BENGAL SIKKIM A N ISLANDS | 1 |
Report of investigation for rare metal mineralisation within pegmatite | 7 |
Gold | 14 |
Copyright | |
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Common terms and phrases
acid volcanics amphibolite Andaman anomaly Arunachal Pradesh Assam bands basemetal basin bed rock belt Bihar biotite block boreholes Chhotanagpur clay Code colour comprising conglomerate covered depth Division drilling dykes east eastern Engineering Geology erosion exploration exposed fault feldspar field season fold foliation Formation geochemical GEOLOGICAL MAP geophysical GEOTECHNICAL INVESTIGATION gneiss gneissic gold Gondwana grade granite granite gneiss granitoids grey Group of rocks GSI Rec Hills district identified intrusives Karbi Anglong laterite limestone lineament lithological located medium grained Meghalaya mica schist migmatites mineralisation minerals nala occurs Orissa OVERVIEW pegmatite phyllite plagioclase Proterozoic Purulia district quartz quartz veins quartzite Quaternary Region river sand sandstone scale schist sector sequence shale Shillong Shillong Group Sikkim siltstone Singhbhum slope soil spillway sq km STAGE GEOTECHNICAL INVESTIGATION stream sediment samples structure sulphide Surface SURVEY OF INDIA terrain thick Toposheet trending ultramafic upto West Bengal western