Records of the Geological Survey of India, Volume 76, Parts 9-14Government of India, 1947 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 5
Geological Survey of India. lurgical ores , the grading at present is approximately as follows , but second grade ore varies from place to place : First grade ore Second grade ore Third grade ore ยท over 48 per cent . Mn . between 45 and ...
Geological Survey of India. lurgical ores , the grading at present is approximately as follows , but second grade ore varies from place to place : First grade ore Second grade ore Third grade ore ยท over 48 per cent . Mn . between 45 and ...
Page 6
... grade , largely over 50 per cent . manganese , and is a serious competitor of India for the high grade hard lump ore market . The average ore from the Gold Coast contains 50-53 per cent . Mn , 2-4 per cent . iron , 3-7 per cent . silica ...
... grade , largely over 50 per cent . manganese , and is a serious competitor of India for the high grade hard lump ore market . The average ore from the Gold Coast contains 50-53 per cent . Mn , 2-4 per cent . iron , 3-7 per cent . silica ...
Page 14
... grade . 2nd grade . Peroxide . 1st 2nd Low 1st grade . grade . grade . grade Per cent . Per cent . Per cent . Per cent . Per cent . Per cent . Per cent . Manganese . 48.0-50.1 38-42 54.4 58 85 50.0 46.50 44.0 48.0 Iron 7-6 14 1.7-0.45 5 ...
... grade . 2nd grade . Peroxide . 1st 2nd Low 1st grade . grade . grade . grade Per cent . Per cent . Per cent . Per cent . Per cent . Per cent . Per cent . Manganese . 48.0-50.1 38-42 54.4 58 85 50.0 46.50 44.0 48.0 Iron 7-6 14 1.7-0.45 5 ...
Contents
GENERAL | 1 |
THE MODE OF OCCURRENCE | 8 |
Indian provincial production of manganese | 12 |
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abrasive albite alloys amount annual average B. C. Roy belt beryl Beryllium Bihar block mica Bombay braunite Brazil built-up mica Calcutta Canada cent Central Provinces chalcocite chalcopyrite cleavage colour condenser films containing copper copper deposits corundum countries crystals deposits occur district dressed mica electrical exports fair stained feet felspar ferromanganese garnet Geol Geological Survey gonditic granite Heavily stained important inches India insulation iron and steel iron-ores J. A. Dunn known Kodarma limestone lode M. S. Krishnan Madras mainly manganese manganese-ore manufacture metal mica industry mica-schists micanite miles million tons Mineral Resources mines muscovite Mysore obtained ore-bodies oxide pegmatites phlogopite plate production psilomelane pyrolusite quality block quality mica quartz Rajputana recent replacement rocks ruby Sandur schists sheet mica silicate Singhbhum sizes smelting South splittings sulphide surface Surv Survey of India Table thickness United vanadium veins world's