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 49
... mineralisation is chlorite - quartz schist which has been injected by thin bands ( 1-2 cm thick ) of grey quartz , associated with pyrite cubes . The injection of quartz veins are lit per lit type and follows en - echelon pattern ...
... mineralisation is chlorite - quartz schist which has been injected by thin bands ( 1-2 cm thick ) of grey quartz , associated with pyrite cubes . The injection of quartz veins are lit per lit type and follows en - echelon pattern ...
Page 51
... mineralisation also present in the adjoining quartz - sericite schist . multaneous with chloritisation of the host rock , ssibly sulphide mineralisation and silicification took ce and as a result lit par lit ' type of injection of grey ...
... mineralisation also present in the adjoining quartz - sericite schist . multaneous with chloritisation of the host rock , ssibly sulphide mineralisation and silicification took ce and as a result lit par lit ' type of injection of grey ...
Page 52
... mineralisation , chlo gation mainly involved collection of chip samples from quartz schist which occurs sandwiched ... mineralised band in nel samples ( width : 5 cm and depth : 3 cm ) were drawn chlorite - quartz schist over any ...
... mineralisation , chlo gation mainly involved collection of chip samples from quartz schist which occurs sandwiched ... mineralised band in nel samples ( width : 5 cm and depth : 3 cm ) were drawn chlorite - quartz schist over any ...
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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Common terms and phrases
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