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 20
... drilling in two widely scattered boreholes ( DND - 1 , 2 ) . Apatite bearing rocks are ferruginous and brecciated which contain very fine granular apatite . Further ยท testing of this Dandudih - Gamardih zone by drilling a few more ...
... drilling in two widely scattered boreholes ( DND - 1 , 2 ) . Apatite bearing rocks are ferruginous and brecciated which contain very fine granular apatite . Further ยท testing of this Dandudih - Gamardih zone by drilling a few more ...
Page 139
... drilling as proposed in FSP , due to non - availability of rigs . The drilling at Tilaitanr in Central Sector to test the presence of footwall lode system and Itihasa in Western sector where huge old working exists , were taken up ...
... drilling as proposed in FSP , due to non - availability of rigs . The drilling at Tilaitanr in Central Sector to test the presence of footwall lode system and Itihasa in Western sector where huge old working exists , were taken up ...
Page 50
... Drilling and related core sampling were also continued in the A - V block . 4.76 L. kms of section measurement ( 1 : 2,000 scale ) , 4.10 sq kms Large scale mapping ( 1 : 10,000 scale ) , 0.03 sq km detailed mapping ( 1 : 2,000 scale ) ...
... Drilling and related core sampling were also continued in the A - V block . 4.76 L. kms of section measurement ( 1 : 2,000 scale ) , 4.10 sq kms Large scale mapping ( 1 : 10,000 scale ) , 0.03 sq km detailed mapping ( 1 : 2,000 scale ) ...
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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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