Report of the Twenty-second Session, India, 1964: Genetic problems of oresR. K. Sundaram The Congress, 1964 - Geology |
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Page 294
... Phyllite , slate , gritty phyllite and conglomeratic quartzite comprise the phyllite group . The phyllite and slate are grey with a greenish tinge . Blotches of brown and red limonite due to oxidation of pyrites are noticed . Thin bands ...
... Phyllite , slate , gritty phyllite and conglomeratic quartzite comprise the phyllite group . The phyllite and slate are grey with a greenish tinge . Blotches of brown and red limonite due to oxidation of pyrites are noticed . Thin bands ...
Page 296
... phyllites and slates and follow the contact between quartzite and phyllite . At places fragments of quartzite and phyllite are caught up in the basic intrusives . The rocks of the Larji Series ( Krol ? or Shali ? ) are well exposed ...
... phyllites and slates and follow the contact between quartzite and phyllite . At places fragments of quartzite and phyllite are caught up in the basic intrusives . The rocks of the Larji Series ( Krol ? or Shali ? ) are well exposed ...
Page 297
... phyllite band . Minor folds in phyllites and slates show a plunge towards northeast . Lineation resulting from parallel orien- tation of quartzite pebbles in conglomeratic quartzite is towards ENE , parallel to the dip direction of the ...
... phyllite band . Minor folds in phyllites and slates show a plunge towards northeast . Lineation resulting from parallel orien- tation of quartzite pebbles in conglomeratic quartzite is towards ENE , parallel to the dip direction of the ...
Common terms and phrases
acidity albite alkaline alteration Anzass deposit apatite associated basic beds belt biotite blue dust carbonate chalcopyrite chemical chert chlorine chromite chromite deposits composition concentration copper crystallisation crystals deformation district Econ erosion level facies faults ferruginous flaky fluorite folds formed fractures gangue gangue minerals garnet genetic Geol geological geosynclinal gneisses goethite gold grains granitoids hematite Hutti hydrothermal India indicate intrusive iron-formations Joda East Khondalites layers leaching lodes magmatic magmatogene magnetite magnetite deposits manganese massive metal sulphides metallogenic metamorphism metasomatic minerais mineralisation mines Noamundi occur oolites ore-forming origin oxides Paleogene pegmatites phase phyllite post-magmatic solutions precipitation pressure processes pyrite pyrrhotite quartz quartzites reef region scapolite schists sedimentary sediments shales shear zone Sikhote-Alin silicates Singhbhum skarn soda granite soluble stage sulphides surface Surv tectonic temperature texture thickness tion ultrabasic Upper Cretaceous uranium veins volcanic wall rock АН СССР