Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 24
... country occupying 56-93 square miles north of Kodarma , but an increasingly ... rocks of the belt are mica - schists grading to mica- gneisses by ... rock may be swarming with innumerable small veins , and here the surface has ...
... country occupying 56-93 square miles north of Kodarma , but an increasingly ... rocks of the belt are mica - schists grading to mica- gneisses by ... rock may be swarming with innumerable small veins , and here the surface has ...
Page 25
... country rock immediately adjacent to the veins , or in inclusions of country within the veins . On a very broad approximation for veins which produce mica , one maund ( 82 lbs . ) of crude mica is obtained from 8 cubic feet of vein ...
... country rock immediately adjacent to the veins , or in inclusions of country within the veins . On a very broad approximation for veins which produce mica , one maund ( 82 lbs . ) of crude mica is obtained from 8 cubic feet of vein ...
Page 32
... country rock of mica - schists and mica - gneisses . The mica market for Central Australia is Alice Springs . Recently an Recently an occurrence of phlogopite has also been recorded from Central Australia . In Western Australia ...
... country rock of mica - schists and mica - gneisses . The mica market for Central Australia is Alice Springs . Recently an Recently an occurrence of phlogopite has also been recorded from Central Australia . In Western Australia ...
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Common terms and phrases
2nd quality albite amount approximately average Bihar Bihar mica Black dotted Black spotted block and splittings block mica built-up mica Calcutta Canada cleavage condenser films condenser plates countries country rock crude mica dealers diopside district electrical exported block feet felspar Geological Survey Giridih grade granite ground mica Heavily stained 1st high quality mica India Indian mica insulation Intermediate stained J. A. Dunn Kodarma Kodarma Reserved Forest large number larger sizes Lepidolite loose splittings M. S. Krishnan Madagascar Madras mainly manufacture mica belt mica exported mica industry mica mining mica produced mica splittings mica trade mica-schists micanite microcline miles muscovite obtained pegmatites percentage phlogopite potash felspar pyroxenite quality block mica quartz quartz core Rajputana Rajputana mica recent recorded ruby mica schists scrap mica sheet mica Short tons smaller solutions South stained 1st quality stoping Survey of India Table 13 trimmed United uparchalla veins washers