Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 30
... mostly in flat country covered by a soil mantle , but some crop out on hill slopes . The pegmatites are distributed over a 60 mile - wide belt extending for 200 miles from Jaipur in the northeast to Udaipur in the southwest . 30 DUNN Mica .
... mostly in flat country covered by a soil mantle , but some crop out on hill slopes . The pegmatites are distributed over a 60 mile - wide belt extending for 200 miles from Jaipur in the northeast to Udaipur in the southwest . 30 DUNN Mica .
Page 34
... miles long and 10 miles wide . Books range up to several feet across , but most of the mica is heavily stained . The cutting percentage is said to be very low - 1.5 percent ! South Africa . - Muscovite is mined in the Lataba area ...
... miles long and 10 miles wide . Books range up to several feet across , but most of the mica is heavily stained . The cutting percentage is said to be very low - 1.5 percent ! South Africa . - Muscovite is mined in the Lataba area ...
Page
... miles . District Board Road Forest & Unmetalled Road === " Kunda N Tisri Khajuri n Kharagdiha Dhanwar Jamuwa 86 0 To Giridih 11 miles Usri N 15 BARNAR 2 . 11 Bamdah Chakai To Giridih 6 miles 30 To Calcutta 192 Miles / E.I.R. 86 30 ...
... miles . District Board Road Forest & Unmetalled Road === " Kunda N Tisri Khajuri n Kharagdiha Dhanwar Jamuwa 86 0 To Giridih 11 miles Usri N 15 BARNAR 2 . 11 Bamdah Chakai To Giridih 6 miles 30 To Calcutta 192 Miles / E.I.R. 86 30 ...
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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