Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 21
... Particularly in the United States , large quantities of scrap mica and mica - schist , with also by - product fine mica from the washing of kaolin , are finely ground and used mainly in the manufacture of roofing insulation , particularly ...
... Particularly in the United States , large quantities of scrap mica and mica - schist , with also by - product fine mica from the washing of kaolin , are finely ground and used mainly in the manufacture of roofing insulation , particularly ...
Page 24
... particularly to the northeast of the Reserved Forest and further east near Gawan . From west to east the main centres of activity ( see Plate 5 ) have been the Kodarma Reserved Forest , Chatkari , Dhorhakola , Domchanch , Masnodih ...
... particularly to the northeast of the Reserved Forest and further east near Gawan . From west to east the main centres of activity ( see Plate 5 ) have been the Kodarma Reserved Forest , Chatkari , Dhorhakola , Domchanch , Masnodih ...
Page 25
... particularly of the flat - dipping type , which cut across the schist cleavage . Dips of the veins are at all angles , from nearly horizontal to vertical . It is noticeable that many of the large flat veins are amongst the best ...
... particularly of the flat - dipping type , which cut across the schist cleavage . Dips of the veins are at all angles , from nearly horizontal to vertical . It is noticeable that many of the large flat veins are amongst the best ...
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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