Records of the Geological Survey of India, Volume 76, Issue 12Geological Survey of India, 1942 - Earthquakes |
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Page 3
... grains . Rounded grains have practically no abrasive power , which depends upon the sharpened edges . Thus garnet sands , unless suitably ground and graded , are useless for abrasive purposes . The same may be said about other coated ...
... grains . Rounded grains have practically no abrasive power , which depends upon the sharpened edges . Thus garnet sands , unless suitably ground and graded , are useless for abrasive purposes . The same may be said about other coated ...
Page 18
... grains in which are disseminated remains of diatoms and sponge spicules . The number of organic remains , however , is infinitesimal as compared with that in true diatomite . Certain specimens from Trinket appear to contain a fair ...
... grains in which are disseminated remains of diatoms and sponge spicules . The number of organic remains , however , is infinitesimal as compared with that in true diatomite . Certain specimens from Trinket appear to contain a fair ...
Page 19
heavier . The individual grains in Tripolite possess a spongy or globular appearance . Tripolite has essentially the same qualities as Diatomite though in general the number of uses to which it can be put is less than for Diatomite ...
heavier . The individual grains in Tripolite possess a spongy or globular appearance . Tripolite has essentially the same qualities as Diatomite though in general the number of uses to which it can be put is less than for Diatomite ...
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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