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 48
... occur as accessories . Opaques inclu- de mainly sulphides ( pyrite , chalcopyrite ) and oxides ( magnetite ) occurring as discrete clots / patches . Locally , they are interfolial in nature . Staurolite - garnet - muscovite - biotite ...
... occur as accessories . Opaques inclu- de mainly sulphides ( pyrite , chalcopyrite ) and oxides ( magnetite ) occurring as discrete clots / patches . Locally , they are interfolial in nature . Staurolite - garnet - muscovite - biotite ...
Page 49
... occur as minor pods ( 2 X 3 cms to 16 X 20 cms in diameter ) within the garnet - biotite - chlorite - quartz schist of the ' Potin Formation ' near Gamji nala . The lenses are mostly aligned parallel to the foliation planes . Under the ...
... occur as minor pods ( 2 X 3 cms to 16 X 20 cms in diameter ) within the garnet - biotite - chlorite - quartz schist of the ' Potin Formation ' near Gamji nala . The lenses are mostly aligned parallel to the foliation planes . Under the ...
Page 81
... occur in a number of roughly NE - SW trending belts throughout the major part of Manipur and Nagaland . Further , since the sandstone at Mokokchung and Wokha were designated by earlier workers as Naogaon Sandstone , it may be presumed ...
... occur in a number of roughly NE - SW trending belts throughout the major part of Manipur and Nagaland . Further , since the sandstone at Mokokchung and Wokha were designated by earlier workers as Naogaon Sandstone , it may be presumed ...
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