Records of the Geological Survey of India, Volume 113, Part 5government of India., 1980 - Geology 1867- includes the "Annual report of the Geological survey of India". |
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Page 34
... grains are altered to limonite along the fracture plane . Some of the grains show sieve texture . West of Bisalhalli , the hill ranges consti- tute calc - silicate like hard rock . Such rocks are east dripping and are exposed as thin ...
... grains are altered to limonite along the fracture plane . Some of the grains show sieve texture . West of Bisalhalli , the hill ranges consti- tute calc - silicate like hard rock . Such rocks are east dripping and are exposed as thin ...
Page 63
... grains of enstatite , plagio- clases and opaque fores occur as additional mineral phases and occupy the interstitial spaces . Secondary hornblende and biotite formed after the pyroxene , constitute a minor proportion of the samples ...
... grains of enstatite , plagio- clases and opaque fores occur as additional mineral phases and occupy the interstitial spaces . Secondary hornblende and biotite formed after the pyroxene , constitute a minor proportion of the samples ...
Page 66
... grains of plagioclase ( An no zoning . 52-67 ) show feeble cloulding but Plagioclases are quite fresh with few grains showing minor alteration to sericite . Albite and pericline twins and also the combination of the two are common ...
... grains of plagioclase ( An no zoning . 52-67 ) show feeble cloulding but Plagioclases are quite fresh with few grains showing minor alteration to sericite . Albite and pericline twins and also the combination of the two are common ...
Contents
Certain aspects of the occurrence of fluorite in India and its exploration | 1 |
Gold mineralisation and geology around Chinmulgund area Dharwar district | 31 |
A note on the mineragraphy of sulphide ores of Kalyadi area Karnataka State | 46 |
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alkaline rocks Ambadongar Andhra Pradesh anorthosite associated axial banded magnetite quartzite basalt biotite borehole breccia CaF2 calcite carbonate carbonatite chalcopyrite Charnockite Charnockite Group chert Chinmulgund chlorite chromiferous chromite chromitite colour complex confidence limits Cretaceous deformation deposits Dharwar diopside district emplacement Felsite fluorite fluorspar folds formation fractures gabbro gabbroic Geol Geological Survey germ pore gm/tonne gneiss GOKUL gold grade grains granite granulite Gujarat host rock hydrothermal hypersthene igneous intrusives Kondapalli hills laterite layering limestone magma magnetite mapping metres million tonnes mineralisation minerals minor Neyveli lignite occurrences olivine orthopyroxenite percent Fe phyllite plagioclase plane pluton pollen pyrite pyroxene pyroxenite pyrrhotite quarry quartz quartz veins quartzite Ramanujam Records reserves Rhyolite rock types rust fungi samples schist schistose sediments spores Stromatolites structure sulphide Survey of India syenite taluks teliospores Tertiary thick tion titles trend ultramafic Unpublished GSI Report upto veinlets volcanic websterite