Records of the Geological Survey of India, Volume 76, Part 10Geological Survey of India, 1942 - Earthquakes |
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Page 13
... according to the size of the largest rectangle which can be cut from each block . In Madagascar the irregular blocks are graded as in Bihar , according to the area of the largest rectangle . A comparison of the various size ...
... according to the size of the largest rectangle which can be cut from each block . In Madagascar the irregular blocks are graded as in Bihar , according to the area of the largest rectangle . A comparison of the various size ...
Page 14
... according to whether the average block in it is towards the upper or lower limit of area of that size . Reliable dealers endeavour to keep a good middle average for their sizes as shipped . The psychological effect on a buyer who finds ...
... according to whether the average block in it is towards the upper or lower limit of area of that size . Reliable dealers endeavour to keep a good middle average for their sizes as shipped . The psychological effect on a buyer who finds ...
Page 15
... according to colour : - Light amber . Silver amber . Medium amber . Dark amber . In Madagascar , phlogopite is classified : - Silver amber or soft amber . Brown amber or medium amber . Black amber or hard amber . - The Bihar ...
... according to colour : - Light amber . Silver amber . Medium amber . Dark amber . In Madagascar , phlogopite is classified : - Silver amber or soft amber . Brown amber or medium amber . Black amber or hard amber . - The Bihar ...
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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