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 76
... schist in the north . Small pockets of staurolite - garnet mica schist and garnetiferous calc silicate rocks occur with- in the mica schist at places . Cherty carbonaceous quartzite also occurs associated with the garnetifer- ous mica ...
... schist in the north . Small pockets of staurolite - garnet mica schist and garnetiferous calc silicate rocks occur with- in the mica schist at places . Cherty carbonaceous quartzite also occurs associated with the garnetifer- ous mica ...
Page 142
... schist , quartz - chlorite - biotite schist , meta- ultramafites , gabbbro , quartzite , metabasalt ( massive , schistose , amygdaloidal ) and mylonitised quartz schist . The Chaibasa Formation consists of quartz- schist ( mylonitised ) ...
... schist , quartz - chlorite - biotite schist , meta- ultramafites , gabbbro , quartzite , metabasalt ( massive , schistose , amygdaloidal ) and mylonitised quartz schist . The Chaibasa Formation consists of quartz- schist ( mylonitised ) ...
Page 144
... schist or in metabasite , in form of vein , veinlets , streaks and dis- seminations . The pyrite mineralisation in general , is more commonly associated either with interfolial quartz in quartz chlorite schist ± biotite or with quart ...
... schist or in metabasite , in form of vein , veinlets , streaks and dis- seminations . The pyrite mineralisation in general , is more commonly associated either with interfolial quartz in quartz chlorite schist ± biotite or with quart ...
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