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". |
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Page 6
... recorded some values in these samples show the following ranges in ppm : Cu ( 5-80 ) , Pb ( < 10- 100 ) , Ni ( < 10-60 ) , Co ( < 10-30 ) , Cr ( 5-40 ) , V ( < 5-70 ) , Zr ( 10-80 ) , Ba ( 20-200 ) . Ag content varies between 1 and 3 ...
... recorded some values in these samples show the following ranges in ppm : Cu ( 5-80 ) , Pb ( < 10- 100 ) , Ni ( < 10-60 ) , Co ( < 10-30 ) , Cr ( 5-40 ) , V ( < 5-70 ) , Zr ( 10-80 ) , Ba ( 20-200 ) . Ag content varies between 1 and 3 ...
Page 7
... recorded 2.5 ppm or more Au ( cf Fig . 4 ) . In these samples Ag , Mo and As show concentrations varying from 1-2 ppm , 2-10 ppm and < 10 ppm , respectively . Cu and Zn values recorded in these samples are less than 100 ppm while Ni and ...
... recorded 2.5 ppm or more Au ( cf Fig . 4 ) . In these samples Ag , Mo and As show concentrations varying from 1-2 ppm , 2-10 ppm and < 10 ppm , respectively . Cu and Zn values recorded in these samples are less than 100 ppm while Ni and ...
Page 15
... recorded , of which jacobsite is the most dominant . Plate I , Fig . 1 shows relicts of jocobsite surrounded by its supergene alteration product viz . pyrolusite and psilomelane / cryptomelane . Jacobsite samples were collected from ...
... recorded , of which jacobsite is the most dominant . Plate I , Fig . 1 shows relicts of jocobsite surrounded by its supergene alteration product viz . pyrolusite and psilomelane / cryptomelane . Jacobsite samples were collected from ...
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 | |
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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