Records of the Geological Survey of India, Volume 114Geological Survey of India, 1984 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
From inside the book
Results 1-3 of 12
Page 1
... appears that the weathered profile above the phyllitic shales of Jatesereng contains residual gold as sporadic nuggets of varying sizes , where these shales are intricately cut across by vein - quartz . Probably these are the provenance ...
... appears that the weathered profile above the phyllitic shales of Jatesereng contains residual gold as sporadic nuggets of varying sizes , where these shales are intricately cut across by vein - quartz . Probably these are the provenance ...
Page 8
... appears from the results that Au values are less than 0.1 ppm in all these samples , the range of Mo , Ag and As values are < 5 to 5 ppm , < 1 to 2 ppm , and < 10 to 20 ppm , respectively . The range of values of Cu , Pb and Zn are ...
... appears from the results that Au values are less than 0.1 ppm in all these samples , the range of Mo , Ag and As values are < 5 to 5 ppm , < 1 to 2 ppm , and < 10 to 20 ppm , respectively . The range of values of Cu , Pb and Zn are ...
Page 31
... appears to have been a retrograde process and possibly it is produced by leaching of potash from plagioclase ( Engel et al , 1960 ) . Variation in lime and soda content is reciprocal and the plagioclase composition is apparently ...
... appears to have been a retrograde process and possibly it is produced by leaching of potash from plagioclase ( Engel et al , 1960 ) . Variation in lime and soda content is reciprocal and the plagioclase composition is apparently ...
Contents
Integrated Geochemical Approach for Tracing Gold Mineralisation in Parts | 1 |
On Jacobsites from Vizianagaram Manganese Belt of Eastern Ghats Andhra | 15 |
Fossil Hippopotamus from Quaternary Alluvial Deposits of Narmada Valley | 17 |
Copyright | |
3 other sections not shown
Other editions - View all
Common terms and phrases
actinolite amphiboles amphibolite analysis ARCHAEAN assemblage associated BANKURA DISTRICT Barakar basement bedrock samples Bihar Biotite boreholes catchment area Chakradharpur chemical colour composition country rocks crystals Dassarma Dolerite Domuhan river Dubrajpur Dubrajpur Formation Electron elements epidiorites geochemical Geol Geological Survey Ghose gneiss Goilkera gold grains Granite gneiss green GSI Type Haast river Hippopotamus hornblende hornblende schist host rock igneous jacobsite Kharswan strip Khatangi hill section magnetite manganese Manuscript received massive amphibolite Mayapur McCluskieganj meta-basic rocks metamorphic metres south mica schists mineralisation minerals namadicus Narmada Neogene nepheline syenite occur palaeindicus Pegmatite pelite phyllites plagioclase Porphyritic present area quartz Quartzite Quaternary ratios Rupatganj 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 three strips values vein-quartz veins West Bengal X-Ray