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 14
... sulphide occurrences . Incidence of gold was earlier reported from now abandoned Dikchu copper mine and also from Rangpo mine of East Sikkim district and from Komai in Darjeeling district , West Bengal . With this background information ...
... sulphide occurrences . Incidence of gold was earlier reported from now abandoned Dikchu copper mine and also from Rangpo mine of East Sikkim district and from Komai in Darjeeling district , West Bengal . With this background information ...
Page 15
... Sulphide mineralisation is present both in the rocks of Chungthang and Gorubathan Formations . In Chungthang Formation the sulphides are dominated by pyrite and pyrrhotite with occasional chalcopytite . Sulphides are both syngenetic and ...
... Sulphide mineralisation is present both in the rocks of Chungthang and Gorubathan Formations . In Chungthang Formation the sulphides are dominated by pyrite and pyrrhotite with occasional chalcopytite . Sulphides are both syngenetic and ...
Page 206
... sulphide rich amphibolite and metachert show that sulphide mineralisation is concentrated along the minute quartz veins that are emplaced parallel and oblique to the foliation . In the sandstone the sulphide mineralisation is controlled ...
... sulphide rich amphibolite and metachert show that sulphide mineralisation is concentrated along the minute quartz veins that are emplaced parallel and oblique to the foliation . In the sandstone the sulphide mineralisation is controlled ...
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