Records of the Geological Survey of India, Volume 113, Part 3The Survey, 1985 - 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 28
... apatite in the Singhbhum Shear Zone , prompted geoscientists to look into the adjacent Northern Shear Zone . Base metal mineralization in the latter was recorded by Dunn and De ( 1942 ) . Subsequent work has proved significant deposits ...
... apatite in the Singhbhum Shear Zone , prompted geoscientists to look into the adjacent Northern Shear Zone . Base metal mineralization in the latter was recorded by Dunn and De ( 1942 ) . Subsequent work has proved significant deposits ...
Page 29
... apatite ore from this mine , the only e of West Bengal producing apatite . The apatite rock records an average of 0.26 % U3O8 the associated clay beds show higher U3Og content vind Singh et al , 1977 ) . These authors have further ...
... apatite ore from this mine , the only e of West Bengal producing apatite . The apatite rock records an average of 0.26 % U3O8 the associated clay beds show higher U3Og content vind Singh et al , 1977 ) . These authors have further ...
Page 37
... apatite , martitised magne- tite , limonite and secondary chert . The dominant mineral is fluor - apatite and infra - red studies indicate carbonate substitution in the apatite ( Ghosh Dastidar , 1977 ) . Though the apatite bands are ...
... apatite , martitised magne- tite , limonite and secondary chert . The dominant mineral is fluor - apatite and infra - red studies indicate carbonate substitution in the apatite ( Ghosh Dastidar , 1977 ) . Though the apatite bands are ...
Contents
Structural evolution of Precambrians in parts of north Singhbhum BiharA Gupta | 13 |
Geology and mineralisation along the northern shear zone Purulia district West | 25 |
BengalAn upto date appraisalM N Kumar N Das and S Das Gupta | 33 |
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anomaly zone antiform apatite assemblage axial plane axis bands Barakar Formation Baripada Basu Beldih belt Bihar biotite carbon-phyllite Cataclasite Chaibasa Chaibasa Formation chlorite chlorite schist horizon conglomerate contours copper Dalma syncline deformation Dhanjori dipping district domains Dubrajpur Formation Dulmi F₁ F₂ feldspars folds foliation fraction geochemical Geol Geological Survey geophysical Ghosh gneiss grains granite granite gneiss granitic rocks Gupta hill hornblende Kandra Kutni kyanite limestone lineation magnetite metamorphic mica schists migmatites mineral mineralisation muscovite Northern Shear Zone occur Orissa panned heavy pelitic phyllite plagioclase planar Plate plunging Precambrian puckers pyrite quartz quartzite Rajmahal Rangpo Records Volume 113 regional S₁ plots S₂ samples Sarkar Sarwan Pahar section schist schistosity sector sequence sericite Shear Zone silicified Singhbhum Singhbhum Shear Zone springs stratigraphic stream sediment structural Subarnarekha river sulphide Surv Survey of India tectonic tectonite trench Turamdih upto