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 7
... containing usually 18 to 22 per cent . Mn is known as " spiegeleisen " . Other special iron - manganese alloys are silico - manganese containing 55 to 70 per cent . Mn , about 19 per cent . Fe , 18-25 per cent . Si , and silico ...
... containing usually 18 to 22 per cent . Mn is known as " spiegeleisen " . Other special iron - manganese alloys are silico - manganese containing 55 to 70 per cent . Mn , about 19 per cent . Fe , 18-25 per cent . Si , and silico ...
Page 8
... contain up to 40 per cent . Mn . An alloy known as manganese bronze " is really a brass containing 60 per cent . Cu , 40 per cent . Zn , and a very small amount of Mn . Certain brasses and bronzes containing up to 3.5 per cent . Mn are ...
... contain up to 40 per cent . Mn . An alloy known as manganese bronze " is really a brass containing 60 per cent . Cu , 40 per cent . Zn , and a very small amount of Mn . Certain brasses and bronzes containing up to 3.5 per cent . Mn are ...
Page 11
... containing 66-4 per cent . Cu . Crystallises in the hexagonal system . Colour , indigo blue . Hardness , 1.5-2 . Specific gravity , 4.6 . Native copper . - Crystallises in the cubic system . Colour , copper red . Streak , metallic ...
... containing 66-4 per cent . Cu . Crystallises in the hexagonal system . Colour , indigo blue . Hardness , 1.5-2 . Specific gravity , 4.6 . Native copper . - Crystallises in the cubic system . Colour , copper red . Streak , metallic ...
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