Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 5
... muscovite there is always a little magnesia and iron present . According to Volk , muscovite may be regarded as being made up of three molecules : potassium muscovite - H , K , AlgSig O 24 , phengite - HK2 ( Fe " , Mg ) 2Al , SiO24 ...
... muscovite there is always a little magnesia and iron present . According to Volk , muscovite may be regarded as being made up of three molecules : potassium muscovite - H , K , AlgSig O 24 , phengite - HK2 ( Fe " , Mg ) 2Al , SiO24 ...
Page 8
... muscovite . Skeletal crystals of biotite may occur throughout some books , and , in heavily spotted or densely ... muscovite the angle which X makes to the normal is up to 1 ° 40 ' , in phlogopite it is up to about 3 ° . In muscovite the ...
... muscovite . Skeletal crystals of biotite may occur throughout some books , and , in heavily spotted or densely ... muscovite the angle which X makes to the normal is up to 1 ° 40 ' , in phlogopite it is up to about 3 ° . In muscovite the ...
Page 34
... muscovite have been produced in Kafue , Northern Rhodesia , in deposits similar to those of Southern Rhodesia . Nyasaland . - A small amount of muscovite has been produced from pegmatites in the vicinity of Lake Nyasa . Somaliland ...
... muscovite have been produced in Kafue , Northern Rhodesia , in deposits similar to those of Southern Rhodesia . Nyasaland . - A small amount of muscovite has been produced from pegmatites in the vicinity of Lake Nyasa . Somaliland ...
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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