Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 52
... quality produced by one firm , during 12 months , from over 20,000 cwt S. D. B. Size . Quality . Block - concld . C. and S. S. Percentage . No. 3 ⚫0103 F. S. G. S. ⚫0641 .1421 Stained .4053 Black dotted ⚫0358 Intermediate stained ...
... quality produced by one firm , during 12 months , from over 20,000 cwt S. D. B. Size . Quality . Block - concld . C. and S. S. Percentage . No. 3 ⚫0103 F. S. G. S. ⚫0641 .1421 Stained .4053 Black dotted ⚫0358 Intermediate stained ...
Page 54
... quality mica was suggested , to replace the older terms , ' munitions and non - munitions qualities . Excluding ... block mica and condenser films ( the latter very small in quantity but steadily increasing ) . The higher quality of ...
... quality mica was suggested , to replace the older terms , ' munitions and non - munitions qualities . Excluding ... block mica and condenser films ( the latter very small in quantity but steadily increasing ) . The higher quality of ...
Page 55
... block and of splittings , the recorded annual production in Bihar since 1936 has consisted of the follow- ing average quantities : between 6,500 and 7,500 cwts of high quality block mica scme of which was made into condenser films ...
... block and of splittings , the recorded annual production in Bihar since 1936 has consisted of the follow- ing average quantities : between 6,500 and 7,500 cwts of high quality block mica scme of which was made into condenser films ...
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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