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 6
... stream sediment samples out of 94 were analysed for gold and basemetals respectively . In the stream sediments Cu value range from 10 to 100 ppm , but at places 2 to 3 fold increase in values over a distance of few kilometer may be ...
... stream sediment samples out of 94 were analysed for gold and basemetals respectively . In the stream sediments Cu value range from 10 to 100 ppm , but at places 2 to 3 fold increase in values over a distance of few kilometer may be ...
Page 7
... stream sediment sampling and bed rock sampling over an area of 150 sq . km to find out the anomalous zones for base - metals and for REE , W , Mo , Sn , etc. A total of 336 Nos of stream sediment samples , 158 nos of bed rock samples ...
... stream sediment sampling and bed rock sampling over an area of 150 sq . km to find out the anomalous zones for base - metals and for REE , W , Mo , Sn , etc. A total of 336 Nos of stream sediment samples , 158 nos of bed rock samples ...
Page 24
... stream sediment sampling . An area of 150 sq . km . was covered by Specialised Thematic Mapping on 1 : 25,000 scale along with collection of 85 bed rock samples , 140 stream sediments and 25 soil samples . The mapping reveals that the ...
... stream sediment sampling . An area of 150 sq . km . was covered by Specialised Thematic Mapping on 1 : 25,000 scale along with collection of 85 bed rock samples , 140 stream sediments and 25 soil samples . The mapping reveals that the ...
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