Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 153
... average grade of 2.31 % Cu . Lode No. 2 which is the major lode contributes 0.294 million tonnes with an average grade of 2.28 % Cu . About 80 % Cu of the reserve lies within the stoped area of Bengal Baragunda Copper Company ( Pl . 16 ) ...
... average grade of 2.31 % Cu . Lode No. 2 which is the major lode contributes 0.294 million tonnes with an average grade of 2.28 % Cu . About 80 % Cu of the reserve lies within the stoped area of Bengal Baragunda Copper Company ( Pl . 16 ) ...
Page 168
... average Mn content is highest ( 650-750 p.p.m. ) in the volcanic country and lowest ( of the order of 280-310 p.p.m. ) ... average Pb values of less than 10 p . p . m . in the other samples . TABLE 3 Average trace element concentration in ...
... average Mn content is highest ( 650-750 p.p.m. ) in the volcanic country and lowest ( of the order of 280-310 p.p.m. ) ... average Pb values of less than 10 p . p . m . in the other samples . TABLE 3 Average trace element concentration in ...
Page 177
quartz veins are present ) the ratio Average concentration of Pb in granite / Average concentration of Pb in " galena - free " vein quartz ranges between 0.25 and 0.60 . Since the effective radius of Pb 2 is 1.32 Å , Pb in pure vein ...
quartz veins are present ) the ratio Average concentration of Pb in granite / Average concentration of Pb in " galena - free " vein quartz ranges between 0.25 and 0.60 . Since the effective radius of Pb 2 is 1.32 Å , Pb in pure vein ...
Contents
CONTENTS | 2 |
The Geology and Mineral Resources of the Andaman | 25 |
Geology of the Coal Measures in the Deccan Trap region | 69 |
Copyright | |
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80 mesh amphibolites analysed Andaman island anorthosites apatite bands Baraganda Baratang Baratang island basaltic basin beds Bihar biotite Bramlette and Riedel calc-granulite calcareous calcite carbonate Carboniferous charnockites chemical clay coal coalfield coalseams conglomerate copper deposition Discoaster district endothermic endothermic peak Eocene estherids fauna felspar figs folds foliation Formation fossil gabbro Gangamopteris garnetiferous geochemical Geol Geological Survey Geologist glacier gneisses Gondwana grained granitic gray anorthosites graywacke hill hornblende indicate khondalites limestone lodes Lower margins metadolerite metal Middle Andaman mineral mineralisation Mussoorie Nala Nicobar occur Orissa orthopyroxene oxides para-amphibolite Permian phenocrysts phosphate phosphorite pinnules plagioclase present pyroxene quartz quartzite rocks samples sandstone sedimentary sediments shales shear shows siltstone snout South Andaman Stradner strike length Surv Survey of India thickness Thinnfeldia tion tonnes trace element ultrabasic upto valley varies veins volcanic younger ortho-amphibolite Zemu glacier zone