Records of the Geological Survey of India, Volume 76, Issue 9Geological Survey of India, 1942 - Earthquakes Includes the Annual report of the Geological Survey of India, 1867- |
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40 percent Mn 50 percent alloys amount annas Archean average Balaghat Bhandara Bihar Bombay braunite Brazil Calcutta carbonate cent Mn Central Provinces chemical Chiatura containing deposits occur deposits of manganese-ore district Eastern exports f.o.b. price feet Fermor ferromanganese freights Geol Geological Survey Gold Coast gonditic hausmannite high grade important increase India Indian manganese iron and steel jacobsite Keonjhar kodurite Kolhan laterite lenticles limestones low grade M. S. Krishnan Madras mainly manganese deposits manganese industry manganese is produced manganese-ore manganese-ore deposits manganiferous iron-ore metal metamorphism miles million tons mineral Mn content MnO2 Mysore Nagpur Nagpur district Nikopol oxide peak Pence percent manganese period peroxide phosphorus Postmasburg price of manganese-ore production of manganese production of manganese-ore psilomelane pyrolusite rhodocrosite rhodonite rocks royalty Russia Sandur second grade sediments SiO2 sitaparite small deposits South Africa Soviet Union Specific gravity spessartite spiegeleisen steel industry surface Survey of India tion trade usually Vizagapatam world's