Records of the Geological Survey of India, Volume 105Geological Survey of India, 1973 - Earthquakes |
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Page 65
... grade , the material on an average is B. F. grade . One grab sample of the limestone deposit from the Wrafters hill area of the Baratang island shows , 33.20 % CaO and 12 % insolubles . Samples from Guitar and Oyster islands contain ...
... grade , the material on an average is B. F. grade . One grab sample of the limestone deposit from the Wrafters hill area of the Baratang island shows , 33.20 % CaO and 12 % insolubles . Samples from Guitar and Oyster islands contain ...
Page 150
... grade of the ore produced would be 1.4 % Cu assuming 25 % losses . Again , it was assumed on the basis of available information ( Oates , 1895 ; Mukherjee and Rao , 1966 ) that roughly 1,800 tonnes of copper metal was produced by the ...
... grade of the ore produced would be 1.4 % Cu assuming 25 % losses . Again , it was assumed on the basis of available information ( Oates , 1895 ; Mukherjee and Rao , 1966 ) that roughly 1,800 tonnes of copper metal was produced by the ...
Page 153
... grade and width of the lode . The average width and grade over 200 m . of strike length is 1.42 m . and 1.54 % Cu . , respectively , while over the remaining 60 m . it is 7m . and 2.60 % Cu respectively . Lode No. 3 : Located in the ...
... grade and width of the lode . The average width and grade over 200 m . of strike length is 1.42 m . and 1.54 % Cu . , respectively , while over the remaining 60 m . it is 7m . and 2.60 % Cu respectively . Lode No. 3 : Located in the ...
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