Records of the Geological Survey of India, Volume 136, Parts 4-7Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 152
A few syenite bands occurring juxtaposcd with carbonatites contain K-feldspar and plagioclase as essential constituents. Allanite subophitically encloses biotite. Compositional zoning is common in allanite. Monazite and baryte occur in ...
A few syenite bands occurring juxtaposcd with carbonatites contain K-feldspar and plagioclase as essential constituents. Allanite subophitically encloses biotite. Compositional zoning is common in allanite. Monazite and baryte occur in ...
Page 36
At places, chalcopyrite is associated with bornite and haematite and chalcopyrite occurs as irregular exsolution bodies i_n ... Chalcopyrite grains are smaller than the bornite grains and sometimes occur as inclusions within bornite.
At places, chalcopyrite is associated with bornite and haematite and chalcopyrite occurs as irregular exsolution bodies i_n ... Chalcopyrite grains are smaller than the bornite grains and sometimes occur as inclusions within bornite.
Page 53
These soda-rich rocks occurring along the eastern margin of the Khetri belt and in I..adera-Sakhun area have been described as albitites. ... They occur as swarms of veins and dykes into the metasediments of the Delhi Supergroup.
These soda-rich rocks occurring along the eastern margin of the Khetri belt and in I..adera-Sakhun area have been described as albitites. ... They occur as swarms of veins and dykes into the metasediments of the Delhi Supergroup.
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Contents
EXTENDED ABSTRACTS OF PROGRESS REPORTS | 5 |
MEGHALAYA MINERAL INVESTIGATION PROJECT | 11 |
RECORDS VOLUME 136 PART5 | i |
Copyright | |
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amphibolite Andhra Pradesh anomaly auriferous bands basalt base metals basin bedrock biotite block boreholes carried charnockite clay collected comprising Construction stage geotechnical covered Cuddapah deformation delineated depth district dolerite dolomite drilling dykes east excavation exploration exposed fault feldspar field field season folds foliation Formation foundation fracture geoenvironmental geological mapping geophysical geotechnical investigation gneiss gneissic gold values grained granite granite gneiss granitoids gravity grey grouting indicated intersected intrusive joints kimberlite limestone lineaments lithounits located magnetic Meghalaya migmatite mineralised zone minerals NE-SW NNW-SSE NW-SE occur overburden pegmatite phyllite plagioclase porphyritic quartz quartz veins quartzite Rajasthan regional River rock samples sand sandstone scale schist schist belt shear zone slope soil sq km stage geotechnical investigation stream sediment strike length structural studies sulphide Supergroup surface surveys syenite Tamil Nadu tectonic thick toposheet traverse trench trending Udaipur district ultramafic village volcanics weathered width