Records of the Geological Survey of India, Volume 121, Part 1The Survey, 1986 - 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 131
... grade gneiss and vary in composition . Lingtse gneiss is represented here as mylonitised quartzo - feldspathic biotite gneiss which occur at the boundary of low grade Daling metamorphites and higher grade Chungthang metasediments . Both ...
... grade gneiss and vary in composition . Lingtse gneiss is represented here as mylonitised quartzo - feldspathic biotite gneiss which occur at the boundary of low grade Daling metamorphites and higher grade Chungthang metasediments . Both ...
Page 142
... grade . The upper ore is thin , impersistent and of low grade . The manganese deposit in Karajolla area occupies a valley and is quarried at ten places showing the width and length of the individual ore bodies ( 3 m x 100 m ) . Southern ...
... grade . The upper ore is thin , impersistent and of low grade . The manganese deposit in Karajolla area occupies a valley and is quarried at ten places showing the width and length of the individual ore bodies ( 3 m x 100 m ) . Southern ...
Page 314
... grade of the ore is medium grade . The main gangue is quartz . The analysis of 3 samples of quartz - sillimanite schist from Langumshei gives 17 % Al2O3 showing it is a low grade ore . One sample of bladed sillimanite from Nongrangba ...
... grade of the ore is medium grade . The main gangue is quartz . The analysis of 3 samples of quartz - sillimanite schist from Langumshei gives 17 % Al2O3 showing it is a low grade ore . One sample of bladed sillimanite from Nongrangba ...
Contents
CENTRAL HEADQUARTERS | 1 |
Drilling Diva | 20 |
Eastern Zone | 44 |
Copyright | |
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alignment amphibolite analysis arca assess bands basalt basalt flows basemetal basin Bihar biotite block boreholes carried charnockite clay coal comprises Construction stage covering an area Deccan Trap delineated deposits depth detailed mapping Director district DIVISION Headquarters dykes exploration exposed field season Formation foundation geochemical geological investigation Geologist Geologist(Sr Geology Division geomorphological geophysical surveys geotechnical investigation geothermal gneiss Gondwana grade granite granite gneiss graphite gravity Hydel indicated investigation was taken km was covered km was mapped limestone located logging Madhya Pradesh magnetic Maharashtra migmatites mineral mineralisation occur Orissa pegmatite phosphorite phyllite power house Pradesh programme proposed quartz quartzite Quaternary Rajasthan REGIONAL GEOLOGY river rock types samples were collected sandstone schist schist belt sediments shale shear zone Sidhi district spillway sq km strike length structure studies suggested sulphide Supergroup surface Systematic geological mapping thickness toposheet traverse mapping trench trending tunnel upto