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
... minor alteration to sericite and chlorite along fractures . Chlorite also occurs as inclusions in staurolite . Garnet grains are fractured , rotated and contain numerous quartz inclusions . Flaky minerals defining S - Surface swerve ...
... minor alteration to sericite and chlorite along fractures . Chlorite also occurs as inclusions in staurolite . Garnet grains are fractured , rotated and contain numerous quartz inclusions . Flaky minerals defining S - Surface swerve ...
Page 49
... Minor Zircon , sphene and epidote , are present as inclusions in biotite and in the interspace between biotite grains . Minor strongly pleochroic hornblende is associated with biotite . 3. Metabasics These rocks occur as minor pods ( 2 ...
... Minor Zircon , sphene and epidote , are present as inclusions in biotite and in the interspace between biotite grains . Minor strongly pleochroic hornblende is associated with biotite . 3. Metabasics These rocks occur as minor pods ( 2 ...
Page 54
... minor chalcopyrite specks ; coarse arsenopyrite has pyrrhotite - chalcopyrite healed fractures with minor sphal- erite occupying the interspaces . Fractured , euhedral to sub- hedral pyrite grains occur as relicts in pyrrhotite . The Cu ...
... minor chalcopyrite specks ; coarse arsenopyrite has pyrrhotite - chalcopyrite healed fractures with minor sphal- erite occupying the interspaces . Fractured , euhedral to sub- hedral pyrite grains occur as relicts in pyrrhotite . The Cu ...
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