Records of the Geological Survey of India, Volume 114Geological Survey of India, 1979 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 7
... grains like quartz are generally found to remain attached with some heavies . A few gold grains are generally found in association with the heavy minerals . Normally gold grains are of two types , the one upto 0.5 mm and the other 1 to ...
... grains like quartz are generally found to remain attached with some heavies . A few gold grains are generally found in association with the heavy minerals . Normally gold grains are of two types , the one upto 0.5 mm and the other 1 to ...
Page 60
... grains . There is a general tendency for the smaller grains to be subhedral , whereas the coarser grains are usually anhedral . Effect of minor deformation is indicated by bending of the twin lamellae . Incipient alteration to sericite ...
... grains . There is a general tendency for the smaller grains to be subhedral , whereas the coarser grains are usually anhedral . Effect of minor deformation is indicated by bending of the twin lamellae . Incipient alteration to sericite ...
Page 70
... grains have developed interlocking texture due to secondary silica overgrowth , which is the result of continuous pressure solution . The original quartz grains are definitely rounded to subrounded and angularity has developed due to ...
... grains have developed interlocking texture due to secondary silica overgrowth , which is the result of continuous pressure solution . The original quartz grains are definitely rounded to subrounded and angularity has developed due to ...
Contents
Integrated Geochemical Approach for Tracing Gold Mineralisation in Parts of | 1 |
On Jacobsites from Vizianagaram Manganese Belt of Eastern Ghats Andhra | 15 |
Fossil Hippopotamus from Quaternary Alluvial Deposits of Narmada Valley | 17 |
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actinolite amphiboles amphibolites analysis Archaean assemblage BANKURA DISTRICT Barakar Barakar Formation basement bedrock samples Bihar biotite boreholes calcite catchment area Chakradharpur chemical Chittorgarh coarse colour composition country rocks crystals Dassarma deposit Dubrajpur Dubrajpur Formation Electron elements epidiorites fossils geochemical Geol Geological Survey Ghose gneiss Goilkera granite gneiss GSI Type Hippopotamus hornblende hornblende schist host rock jacobsite Kharswan Khatangi hill section lithological magnetite manganese Manuscript received massive amphibolites McCluskieganj meta-basic rocks metamorphic metres mineralisation minerals namadicus Narmada nepheline syenite Nimbahera Nimbahera limestone occur palaeindicus phyllitic plagioclase Plate present area quartz Quartzite Quaternary Rajmahal Hills Records Vol river Rupatganj Sah and Shah Sawa schist schistose schistose amphibolite sediments shale Singhbhum Singhbhum Shear Zone specimens stratigraphic stream sediment-concentrate samples sulphide Surv Survey of India Table-II Talapatra texture values vein-quartz veins Vindhyan West Bengal X-Ray Λ Λ