Records of the Geological Survey of India, Volume 123, Part 1The Survey, 2002 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 183
... quartz vein at 2nd level at a depth of 100 m . The width of the quartz vein ( sheared silicified zone ) varies from 1.79 to 9.85 m in these boreholes . The rock is greyish white to greenish white , massive to sheared and fine grained ...
... quartz vein at 2nd level at a depth of 100 m . The width of the quartz vein ( sheared silicified zone ) varies from 1.79 to 9.85 m in these boreholes . The rock is greyish white to greenish white , massive to sheared and fine grained ...
Page 225
... quartz calcite . Calc - magnesian metasediments are tentatively identified and show an altered mineral assemblage of chlorite - amphibole- ± talc ± serpentine + calcite quartz along with minor sphene . High Mgo and low chromium values ...
... quartz calcite . Calc - magnesian metasediments are tentatively identified and show an altered mineral assemblage of chlorite - amphibole- ± talc ± serpentine + calcite quartz along with minor sphene . High Mgo and low chromium values ...
Page 396
... quartz veins and carry little sulphide . The sulphides occur in the quartz - calcite veins in the form of dissemination , stringer and veins repre- sented by pyrite , chalcopyrite , galena , arsenopyrite and pyrrhotite . These sulphides ...
... quartz veins and carry little sulphide . The sulphides occur in the quartz - calcite veins in the form of dissemination , stringer and veins repre- sented by pyrite , chalcopyrite , galena , arsenopyrite and pyrrhotite . These sulphides ...
Contents
CENTRAL HEADQUARTERS | 1 |
AIRBORNE MINERAL SURVEYS AND EXPLORATION WING | 46 |
COAL WING | 72 |
Copyright | |
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analysed anomaly assess associated bands basalt base basic basin belt Bihar block bodies boreholes carried channel clay coal Code collected completed comprises condition construction continued core covered delineated deposits depth detailed developed Director district Division drilling dykes eastern exploration exposed field flows Formation foundation geological mapping geophysical geotechnical investigation gneiss gold grade grained granite Group Headquarters holes identified indicated intrusive irrigation length lignite limestone located lower magnetic major mineral mineralisation Nagpur objective occur Orissa Pradesh prepared present processed proposed quartz quartzite range Regional reported reservoir revealed river rock samples sand sandstone scale Scheme schist seams sediments shale shear soil spillway sq km stage strike structure suggested surface surveys taken thickness thin tion Toposheet traverses trending tunnel units upto values varies various veins West zone