Records of the Geological Survey of India, Volume 76, Issue 12Geological Survey of India, 1942 - Earthquakes |
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Page 8
... rock is relatively pure with rutile as the only impurity , but usually there is a little sillimanite present . With increase in the amount of sillimanite the rock merges into masses of almost pure sillimanite which contain a little ...
... rock is relatively pure with rutile as the only impurity , but usually there is a little sillimanite present . With increase in the amount of sillimanite the rock merges into masses of almost pure sillimanite which contain a little ...
Page 19
... rock . In petrological characters the rock is fine glassy volcanic tuff . Uses . Pumice is commonly used as an abrasive for preparing and smoothening metal , wood or leather surfaces before plating , paint- ing , or varnishing , etc ...
... rock . In petrological characters the rock is fine glassy volcanic tuff . Uses . Pumice is commonly used as an abrasive for preparing and smoothening metal , wood or leather surfaces before plating , paint- ing , or varnishing , etc ...
Page 22
... rocks will help in its improvement . Another peculiar , even - grained rock known as Novoculite occur- ring at Barus and at Khunmuh in Kashmir is likewise very suitable for honing stones . " It is a compact , chert - like rock of white ...
... rocks will help in its improvement . Another peculiar , even - grained rock known as Novoculite occur- ring at Barus and at Khunmuh in Kashmir is likewise very suitable for honing stones . " It is a compact , chert - like rock of white ...
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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