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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Results 6-10 of 42
Page 214
... cassiterite , wolfram and quartz , with calcite as quite a common gangue mineral . The grade varies very considerably from place to place in the veins , but mill heads average just below 3 per cent . A coarse banding is 214 [ VOL . 73 ...
... cassiterite , wolfram and quartz , with calcite as quite a common gangue mineral . The grade varies very considerably from place to place in the veins , but mill heads average just below 3 per cent . A coarse banding is 214 [ VOL . 73 ...
Page 215
... cassiterite of a sandy nature . It calls to mind the unusual occurrence at Mount Bischoff in Tasmania , where in places porphyry dykes were attacked during mineralisation and the felspars removed as well as much of the quartz , leaving ...
... cassiterite of a sandy nature . It calls to mind the unusual occurrence at Mount Bischoff in Tasmania , where in places porphyry dykes were attacked during mineralisation and the felspars removed as well as much of the quartz , leaving ...
Page 216
... cassiterite ( Pl . 6 , figs . 1 and 2 ) . The prismatic cleavage is so well developed that the mineral crumbles readily on breaking . An analysis on carefully hand - picked material , which previous microscopical examination had shown ...
... cassiterite ( Pl . 6 , figs . 1 and 2 ) . The prismatic cleavage is so well developed that the mineral crumbles readily on breaking . An analysis on carefully hand - picked material , which previous microscopical examination had shown ...
Page 218
... cassiterite , and difficult to compare owing to the latter's uneven surface , but best judged by strong screening . Its reflectivity is greater than that of any gangue mineral present . Anisotropism : completely obscured by the pale ...
... cassiterite , and difficult to compare owing to the latter's uneven surface , but best judged by strong screening . Its reflectivity is greater than that of any gangue mineral present . Anisotropism : completely obscured by the pale ...
Page 219
... cassiterite or a wolfram crystal , but it is commonly interstitially arranged with respect to these minerals . It is often enclosed in quartz and in such sulphides as bismuthinite and galena ( Pl . 9 , fig . 3 ) . Veinlike lines of ...
... cassiterite or a wolfram crystal , but it is commonly interstitially arranged with respect to these minerals . It is often enclosed in quartz and in such sulphides as bismuthinite and galena ( Pl . 9 , fig . 3 ) . Veinlike lines of ...
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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