Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 17
... mica by the terms " high quality and " medium quality " mica respectively , and also to replace " non- munitions " mica by the term " low quality " mica . High quality mica includes all ruby block better than good stained , and all ...
... mica by the terms " high quality and " medium quality " mica respectively , and also to replace " non- munitions " mica by the term " low quality " mica . High quality mica includes all ruby block better than good stained , and all ...
Page 54
... mica was suggested , to replace the older terms , ' munitions and non - munitions qualities . Excluding amber mica ... block mica and condenser films ( the latter very small in quantity but steadily increasing ) . The higher quality of ...
... mica was suggested , to replace the older terms , ' munitions and non - munitions qualities . Excluding amber mica ... block mica and condenser films ( the latter very small in quantity but steadily increasing ) . The higher quality of ...
Page 55
... mica , is made into splittings . Hence the ratio of exported splittings to block mica is much greater than the above , and is probably nearer 80 percent . The remaining 20 percent represented by block mica is approximately divided into ...
... mica , is made into splittings . Hence the ratio of exported splittings to block mica is much greater than the above , and is probably nearer 80 percent . The remaining 20 percent represented by block mica is approximately divided into ...
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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