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 18
... garnet schist , staurolite schist and kyanite schist . Garnet and biotite schists commonly alternate with staurolite schists . Staurolite Schist is friable and . rich in muscovite and- biotite . Minerals in order of abundance are ...
... garnet schist , staurolite schist and kyanite schist . Garnet and biotite schists commonly alternate with staurolite schists . Staurolite Schist is friable and . rich in muscovite and- biotite . Minerals in order of abundance are ...
Page 20
... garnet .The six - phase assemblage - [ staurolite + biotite + cordierite + garnet muscovite + quartz ] was not observed . Thus it is reasonable to infer that a switch over of tie lines from [ cordierite + garnet ] to [ staurolite + ...
... garnet .The six - phase assemblage - [ staurolite + biotite + cordierite + garnet muscovite + quartz ] was not observed . Thus it is reasonable to infer that a switch over of tie lines from [ cordierite + garnet ] to [ staurolite + ...
Page 48
... Garnet grains are fractured , rotated and contain numerous quartz inclusions . Flaky minerals defining S - Surface swerve round garnet and staurolite grains . Earlier generation biotites are mostly chloritised with clots of opaques ...
... Garnet grains are fractured , rotated and contain numerous quartz inclusions . Flaky minerals defining S - Surface swerve round garnet and staurolite grains . Earlier generation biotites are mostly chloritised with clots of opaques ...
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