Records of the Geological Survey of IndiaGeological Survey of India, 1939 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 226
... sulphides , carbonate and scheelite . It occurs in lodes in both slate and granite country . Molybdenite appears to be the earliest of the sulphides . It commonly occurs as small thin flakes isolated in quartz or at the border of ...
... sulphides , carbonate and scheelite . It occurs in lodes in both slate and granite country . Molybdenite appears to be the earliest of the sulphides . It commonly occurs as small thin flakes isolated in quartz or at the border of ...
Page 227
... sulphides are sometimes veined and replaced by chalcopyrite , quartz , calcite and other gangue minerals . Sphalerite is usually closely associated with wolfram . The posi tion of sphalerite with respect to pyrite and arsenopyrite ...
... sulphides are sometimes veined and replaced by chalcopyrite , quartz , calcite and other gangue minerals . Sphalerite is usually closely associated with wolfram . The posi tion of sphalerite with respect to pyrite and arsenopyrite ...
Page 229
... sulphides . Lepidolite occurs as small radiating groups and shows a typical colourless to pale pink pleochroism . Some of the mus- covite is altered to a pale brownish variety . In one section veins of gilbertite in cassiterite stop ...
... sulphides . Lepidolite occurs as small radiating groups and shows a typical colourless to pale pink pleochroism . Some of the mus- covite is altered to a pale brownish variety . In one section veins of gilbertite in cassiterite stop ...
Page 233
... sulphides , calcium , with also a little beryllium , alumina , magnesia , lithia and alkalies , -a liquid which must obviously be alkaline in reaction . The mode of combination of the Sn was cer- tainly not as a fluoride , for all F had ...
... sulphides , calcium , with also a little beryllium , alumina , magnesia , lithia and alkalies , -a liquid which must obviously be alkaline in reaction . The mode of combination of the Sn was cer- tainly not as a fluoride , for all F had ...
Page 235
... sulphides became more prevalent . In the lower barren sections of veins sulphides ( all of them ) occur and oxides do not . " However , Mr. Hobson supplies the partial answer himself by suggesting that " All these anomalies may be due ...
... sulphides became more prevalent . In the lower barren sections of veins sulphides ( all of them ) occur and oxides do not . " However , Mr. Hobson supplies the partial answer himself by suggesting that " All these anomalies may be due ...
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Common terms and phrases
1.-General Report 3.-Mineral Production Aravalli Assam Baluchistan basal Bengal Bihar biotite Bombay calcareous Calcutta cassiterite Central Provinces charnockite Chinji Coal Coal-field conglomerate Congr Coulson Cretaceous Deccan trap deposits Dhok Pathan Diener district earthquake east Eastern Eastern States Agency Eocene F. R. C. Reed fauna felspar formation Fossil garnet genus Geol Geological Survey Geologist Geology gneisses gneissic Gondwana granite Hills Himalayas India intrusive Journ Kashmir limestone Lower Madras Memoir metamorphic meteorite Mica miles minerals Mining Miscellaneous Notes Nagpur Narbada North-West Northern Shan occur outcrops Paliyad Permian phyllites Pinjor plateau print).-Annual report Proc Production of India Punjab quartz quartzite Rajputana Red Beds river rocks rupees Sahni Salt Range sandstones schists shales sheet Siwalik Southern species specimens Surv Survey of India Tertiary Trias Triassic Twenty-fourth Ind Upper Burma valley veins Vindhyan VOL VOL Western wolfram Yunnan