Records of the Geological Survey of India, Volume 115, Parts 3-4The Survey, 1987 - 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 36
... . Uganda ( Sutherland , 1966 ) . Total iron analysed as Fe203 in the present analysis . Or 11.68 12.33 4.52 Ab 13.03 5.57 - An 14.18 36 47 17 4 ALKALINE MAGMATISM IN PARTS OF WEST KHASI HILLS AND EAST GARO HILLS DISTRICTS, MEGHALAYA.
... . Uganda ( Sutherland , 1966 ) . Total iron analysed as Fe203 in the present analysis . Or 11.68 12.33 4.52 Ab 13.03 5.57 - An 14.18 36 47 17 4 ALKALINE MAGMATISM IN PARTS OF WEST KHASI HILLS AND EAST GARO HILLS DISTRICTS, MEGHALAYA.
Page 49
... analysed upto 1000 ppm Cu ( Ghosh et al 1984 ) . Description of the host rock of mineralisation The polymetallic sulphide prospect of Ranga Valley occurs within a small section of the schistose member of the ' Potin Formation ' , which ...
... analysed upto 1000 ppm Cu ( Ghosh et al 1984 ) . Description of the host rock of mineralisation The polymetallic sulphide prospect of Ranga Valley occurs within a small section of the schistose member of the ' Potin Formation ' , which ...
Page 57
... analysed by the Bhaba Atomic Research Centre , Bombay , revealed the presence of columbite / tapiolite ( D.B. Ghosh , pers . Comm . ) analysing both Cu and Sn in it . Different Species of garnet in the mineralised zone Initially ...
... analysed by the Bhaba Atomic Research Centre , Bombay , revealed the presence of columbite / tapiolite ( D.B. Ghosh , pers . Comm . ) analysing both Cu and Sn in it . Different Species of garnet in the mineralised zone Initially ...
Contents
A NOTE ON THE EVOLUTION OF THE MINERAL | 17 |
Pant | 24 |
A R Nambiar | 43 |
Copyright | |
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aegirine alkaline rocks Arunachal Pradesh assemblage Barail Range bedded biotite borehole Brahmaputra camptonites carbonatite Chalcopyrite charnockite chlorite Coal cordierite deposits Disang dissected hills drainage dyke Evans feldspar feldspathic ijolite flood plain foliation fractured garnet Geol GEOLOGICAL SURVEY gneiss Golagar basin Golagar Nala grains GSI Rec 115 Hills district Himalaya ijolite immiscibility Indravati river inner belt Kohima Kohima synclinorium Kopili Koraput lamprophyres landforms magma magnetite Manipur Meghalaya metamorphic metapelites Mikir hills mineral mineralised zone muscovite Nagaland Nala Naogaon Naogaon Sandstone NE-SW occur Orissa orthoclasite phenocrysts Phyangla Plate point bar polymetallic porphyroblasts Potin Formation pyrite pyrrhotite quartz Ranga River Ranga Valley Rec 115 pts region ridge and valley samples San Nala sandstone schist shale Shillong staurolite Structural Plateau Subansiri district sulphide mineralisation Surma Surv SURVEY OF INDIA synclinorium tectonic Tikak parbat tinguaite trending tributaries type area Umrong reservoir units Upper Assam upto