Records of the Geological Survey of India, Volume 98The Survey, 1968 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 148
... mica concentration in the middle pegmatite is generally close to the foot - wall and the hanging wall , and also along the fracture planes . The eastern pegmatite is zoned , and a 15 m . wide quartz core is present . Mica is ...
... mica concentration in the middle pegmatite is generally close to the foot - wall and the hanging wall , and also along the fracture planes . The eastern pegmatite is zoned , and a 15 m . wide quartz core is present . Mica is ...
Page 149
... mica , some of the veins also carry well developed black tourmaline in abundance . In the Bendro mica mine , the pegmatite is a massive vein of about 50 m . thickness and is being worked for rich mica lodes , developed along the foot ...
... mica , some of the veins also carry well developed black tourmaline in abundance . In the Bendro mica mine , the pegmatite is a massive vein of about 50 m . thickness and is being worked for rich mica lodes , developed along the foot ...
Page 150
... mica deposits of the belt appear to be of contact metamorphic type , developed along the contact of dunite and the ... mica is seen ( 1 ) associated with serpentinite within the main Punalur mica mine , ( 2 ) associated with pegmatites ...
... mica deposits of the belt appear to be of contact metamorphic type , developed along the contact of dunite and the ... mica is seen ( 1 ) associated with serpentinite within the main Punalur mica mine , ( 2 ) associated with pegmatites ...
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Common terms and phrases
alluvium amphibolite Andhra Pradesh anticline Archaean Asstt bands Banerjee Barakar basalt beds Bihar biotite boreholes carbonaceous carried out systematic chalcopyrite charnockite Circle clay coal seams coalfield comprise conglomerate copper copper-ore Deccan Trap deposits depth dips district district-See dolerite dolomite drill holes dykes exposed fault ferruginous folded foliation formations fossils garnetiferous geological mapping Scale Geologists Geologists Junior gneiss Gondwana grade granite granite gneiss grey groundwater Headquarters India indicated investigation kilometres laterite limestone located Madhya Pradesh Madras metre mica mica-schist million tonnes minerals Murree Murthy nala occur outcrops pegmatite Petrological Laboratories phyllite power-house Project pyrite quartz quartz veins quartzite Rajasthan Regional Office river rock types samples sand sandstone Sarvashri schist Senior Technical Assistant shale Sharma shear zone Shri Singh slate spillway strike sulphide Superintending Geologist in-Charge syncline Talchir taluk thickness thin trending tubewells tunnel unconformably Upper varies Vindhyan width