Records of the Geological Survey of India, Volume 76, Issue 12Geological Survey of India, 1942 - Earthquakes |
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Page 5
... crystals . It is only the very fine crystals that are normally used for abrasive purposes . Uses . The dark opaque variety of diamond is known as carbonado or bort . On account of its toughness and absence of cleavage , it is ...
... crystals . It is only the very fine crystals that are normally used for abrasive purposes . Uses . The dark opaque variety of diamond is known as carbonado or bort . On account of its toughness and absence of cleavage , it is ...
Page 8
... Crystals of the mineral have been obtained from only No. 2 and No. 9 Deposits . The crystals from the latter deposit are quite large and possess an excellent rhombohedral cleavage . The colour of both fine - grained material and coarse ...
... Crystals of the mineral have been obtained from only No. 2 and No. 9 Deposits . The crystals from the latter deposit are quite large and possess an excellent rhombohedral cleavage . The colour of both fine - grained material and coarse ...
Page 23
... crystals loosely knitted together . The crystals are broken up , pulverised , cleaned by water and chemicals , and finally graded into the various sizes of grain required by the trade . Since the basic patents covering the above methods ...
... crystals loosely knitted together . The crystals are broken up , pulverised , cleaned by water and chemicals , and finally graded into the various sizes of grain required by the trade . Since the basic patents covering the above methods ...
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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