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 38
... mainly of psilomelane with subordinate amounts of pyrolusite , braunite , manganmagnetite , and , at Garividi , " vredenburgite " , a mixture of jacobsite and hausmannite . They are usually of second and third grade - although some ...
... mainly of psilomelane with subordinate amounts of pyrolusite , braunite , manganmagnetite , and , at Garividi , " vredenburgite " , a mixture of jacobsite and hausmannite . They are usually of second and third grade - although some ...
Page 23
... mainly to U. S. A. , at about £ 1 per ton f . o . r1 . South West Africa . - No workable deposits of muscovite have been found , al- though in places pegmatites containing the mineral are known . Lepidolite is found over a wide area ...
... mainly to U. S. A. , at about £ 1 per ton f . o . r1 . South West Africa . - No workable deposits of muscovite have been found , al- though in places pegmatites containing the mineral are known . Lepidolite is found over a wide area ...
Page 25
... mainly at the southern end . Apparently their mode of occurrence is similar to that of the Canadian deposits , with associated limestones and so - called pyroxenite . The colour of the phlogopite varies from amber , or brown , to silver ...
... mainly at the southern end . Apparently their mode of occurrence is similar to that of the Canadian deposits , with associated limestones and so - called pyroxenite . The colour of the phlogopite varies from amber , or brown , to silver ...
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