Records of the Geological Survey of IndiaThe Survey, 1891 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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Página 161
... Pleochroic aureoles around inclusions of zircon are not uncommon . The pleochroism is most intense , with- c and b , dark black - brown . a , bright yellow . Often the absorption is so great , parallel to c and b , that the plate is ...
... Pleochroic aureoles around inclusions of zircon are not uncommon . The pleochroism is most intense , with- c and b , dark black - brown . a , bright yellow . Often the absorption is so great , parallel to c and b , that the plate is ...
Página 163
... pleochroic , with- ; } greenish white , almost colourless . a , bright flesh - red . This pleochroism is variable in intensity , and sometimes only exists in the state of faculæ . The cleavages oo P. ∞ P. ( 110 ) ( 110 ) are well ...
... pleochroic , with- ; } greenish white , almost colourless . a , bright flesh - red . This pleochroism is variable in intensity , and sometimes only exists in the state of faculæ . The cleavages oo P. ∞ P. ( 110 ) ( 110 ) are well ...
Página 167
... pleochroic , pyroxene , passes into the first of the pyroxenic gneisses which will be described further on . Sometimes the rock is extremely compact , with a greenish - yellow colour , and slightly resinous appearance ( it is then ...
... pleochroic , pyroxene , passes into the first of the pyroxenic gneisses which will be described further on . Sometimes the rock is extremely compact , with a greenish - yellow colour , and slightly resinous appearance ( it is then ...
Página 168
... pleochroic aureoles of a fine golden yellow . I believe that pegmatoidal associations of cordier- ite and quartz have not been described hitherto . ] ( c ) Granulitic microcline - gneiss . This last group is more artificial than the ...
... pleochroic aureoles of a fine golden yellow . I believe that pegmatoidal associations of cordier- ite and quartz have not been described hitherto . ] ( c ) Granulitic microcline - gneiss . This last group is more artificial than the ...
Página 171
... orthoclase and quartz . ' A. Lacroix : " Sur l'albite des pegmatites de Norvège " Bull . Soc . Minér . , IX ( 1886 ) , p . 131 . The hornblende is strongly pleochroic , with : c , PART 3. ] 171 LACROIX Gneissose rocks of Salem and Ceylon .
... orthoclase and quartz . ' A. Lacroix : " Sur l'albite des pegmatites de Norvège " Bull . Soc . Minér . , IX ( 1886 ) , p . 131 . The hornblende is strongly pleochroic , with : c , PART 3. ] 171 LACROIX Gneissose rocks of Salem and Ceylon .
Outras edições - Ver tudo
Records of the Geological Survey of India, Volume 56 Geological Survey of India Visualização integral - 1926 |
Records of the Geological Survey of India, Volume 120,Partes 2-8 Geological Survey of India Visualização de excertos - 1985 |
Palavras e frases frequentes
ACADEMY acid anhydrite anorthite assay Band beds borings Boulder-bed Burma calcite Calcutta carbonaceous carbonaceous shales cent Ceylon clay cleavage coal coal-fields colour containing copper crystals deposits distillation district Ditto dolomite east examination feet felspar Fixed carbon Flsc fossils fragments garnet Geol Geological Survey glaciers gneiss GOVERNMENT OF INDIA graphite gypsum heft hills hornblende lake Lashio lime limestone London Mainglôn Marl memoir mica microscopic miles millimetre mineral mines moraine Museum Namma Nampai Namsèka Nummulitic occurs Oldham oligoclase outcrops parallel pebbles petroleum plates pleochroic Punjab Purple Sandstone pyrites pyroxene quantity quartz quartzite Red Marl river rocks Royal 8vo rubies Salem Salt Range samples sand Sandstone scapolite schists seam sections Série Shale shaly Shan side Sikkim sillimanite Siwalik SOCIETY specific gravity specimens strata sulphate surface Survey of India tertiary thickness Titles of Books valley Warth Wynne yellow
Passagens conhecidas
Página 263 - Descriptive Catalogue of the Nests and Eggs of Birds found Breeding in Australia and Tasmania
Página 97 - Geological notes made on a visit to the Coal recently discovered in the country of the Suni Pathans, southeast corner of Afghanistan, 145.
Página 263 - Kentucky fossil corals. A monograph of the fossil corals of the Silurian and Devonian rocks of Kentucky.
Página 1 - Annual Report of the Geological Survey of India, and of the Geological Museum, Calcutta, for the year 1887.
Página 154 - Tiri-Garhwal. On the geology of the Garo Hills. On some Indian image-stones. On soundings recently taken off Barren Island and Narcondam. On a character of the Talchir boulder-beds. Analysis of Phosphatic Nodules from the Saltrange, Punjab. Part a.— The fossil vertebrata of India. On the Echinoidea of the cretaceous series of the Lower Narbada Valley, with remarks upon their geological age.
Página 101 - Gokteik.Kunl6n valley marks a line of great disturbance of the strata ; two large faults, or probably two systems of compound faults, running from the south-west to the north-east, are distinctly discernible.