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 46
... sulphide mineralisation ( Roychoudhury , 1962 ; Rao and Dias , 1963 ) , though , a cobaltiferous pyrite zone was located ( Kakoti and Rao , 1968 ) . Since 1969 , systematic investigations were carried out by the Arunachal Pradesh Circle ...
... sulphide mineralisation ( Roychoudhury , 1962 ; Rao and Dias , 1963 ) , though , a cobaltiferous pyrite zone was located ( Kakoti and Rao , 1968 ) . Since 1969 , systematic investigations were carried out by the Arunachal Pradesh Circle ...
Page 49
... sulphides occur in magnetite . A few samples of metabasics have 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 ...
... sulphides occur in magnetite . A few samples of metabasics have 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 ...
Page 64
... sulphide occurrences around Rangpo , Sikkim . Rec . Geol . Surv . Ind . 112 ( III ) pp . 33-38 . Geology of Tin deposits , Elsevier Scientific Publishing , Co. Amsterdam , Oxford , New York . Polymetallic Sulphide mineralisation in ...
... sulphide occurrences around Rangpo , Sikkim . Rec . Geol . Surv . Ind . 112 ( III ) pp . 33-38 . Geology of Tin deposits , Elsevier Scientific Publishing , Co. Amsterdam , Oxford , New York . Polymetallic Sulphide mineralisation in ...
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