Records of the Geological Survey of India, Volume 76, Issue 12Geological Survey of India, 1942 - Earthquakes |
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Page 6
... impurities which they contain . The common variety of corundum with which we are here concerned is white or grey , with vitreous lustre . Greenish or brown varieties are also met with . Corundum possesses a specific gravity of 3.93 to ...
... impurities which they contain . The common variety of corundum with which we are here concerned is white or grey , with vitreous lustre . Greenish or brown varieties are also met with . Corundum possesses a specific gravity of 3.93 to ...
Page 25
... impurities highly magnetic . These impurities , a part of which is suspended throughout the mass of the fused alu- mina , can , therefore , be easily extracted by means of an electro- magnet after the crude abrasive has been crushed ...
... impurities highly magnetic . These impurities , a part of which is suspended throughout the mass of the fused alu- mina , can , therefore , be easily extracted by means of an electro- magnet after the crude abrasive has been crushed ...
Page 26
... impurities are harmful . Steel balls are further employed for cleaning castings and forgings , as well as in the building stone industry in connection with the polishing and sawing of marbles and granites . Manufacture . Small The ...
... impurities are harmful . Steel balls are further employed for cleaning castings and forgings , as well as in the building stone industry in connection with the polishing and sawing of marbles and granites . Manufacture . Small The ...
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Common terms and phrases
A. L. Coulson Abrasive Industry abrasive purposes Abrasive wheels Almandite aluminium artificial abrasives B. C. Roy bauxite beds Bihar Burma Canada Department Carborundum cent chert coated abrasives coated cloth coke colour corundum Corundum occurs crushed crystals Department of Mines Deposits Dhalbhum Diamond Diatomite Emery employed felspar flint Fused alumina future trend garnet garnet sands Geol Geological Survey glass grains grey grinding hard Hazaribagh district high grade honing stones impurities ingredients iron J. A. Dunn J. A. Mineral Resources Kashmir Kyanite large quantities limestone LXXVIII M. S. Krishnan Madras manufacture of abrasive manufactured abrasives Marketing and future Memoir metal polish mica Mysore natural abrasives oxide paper and cloth pebbles polishing material powders Products of Canada Pumice Resources of Bihar Rewa Risin spur rock sandstones siliceous silicon carbide sillimanite Singhbhum steel balls Steel wool suitable surfaces Surv Survey of India Talc Tripolite varies Vindhyan Volcanic dust