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 30
... increase in pro- duction of iron and steel and also of manganese has been phenomenal . By 1936 pro- duction of iron and steel had passed the previous highest peak of 1929 and went on in 1937 to establish a new record of 102,500,000 tons ...
... increase in pro- duction of iron and steel and also of manganese has been phenomenal . By 1936 pro- duction of iron and steel had passed the previous highest peak of 1929 and went on in 1937 to establish a new record of 102,500,000 tons ...
Page 6
... increase of iron or magnesia ; some are pleochroic haloes . By judicious splitting , the intercleavage films of inclusions and the more seriously stained films are removed , thus improving the quality of the block mica . 64 Optically ...
... increase of iron or magnesia ; some are pleochroic haloes . By judicious splitting , the intercleavage films of inclusions and the more seriously stained films are removed , thus improving the quality of the block mica . 64 Optically ...
Page 40
... increase in the depth and lateral extent of the workings , mining costs may be as high as 75 per cent . of the total , as in the case of the Indian Copper Corporation . It is apparent that , although constantly increasing efficiency in ...
... increase in the depth and lateral extent of the workings , mining costs may be as high as 75 per cent . of the total , as in the case of the Indian Copper Corporation . It is apparent that , although constantly increasing efficiency in ...
Contents
GENERAL | 1 |
THE MODE OF OCCURRENCE | 8 |
Indian provincial production of manganese | 12 |
13 other sections not shown
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Common terms and phrases
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