Records of the Geological Survey of India, Volume 102The Survey, 1972 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 13
... colour with a greenish tinge and shows an expan- sion ranging from 5 to 20 times its original volume . The vermiculite was formed by hydrothermal alteration of the enstatite - peridotite . The esti- mated reserve is about 3,000 tonnes ...
... colour with a greenish tinge and shows an expan- sion ranging from 5 to 20 times its original volume . The vermiculite was formed by hydrothermal alteration of the enstatite - peridotite . The esti- mated reserve is about 3,000 tonnes ...
Page 146
... colour and the upper one is 2 m . thick , slightly darker in colour and appears to be more magnesian . Limestone beds dip at 15 ° towards north . The grade of the limestone is not uniform along the strike but the bulk of the limestone ...
... colour and the upper one is 2 m . thick , slightly darker in colour and appears to be more magnesian . Limestone beds dip at 15 ° towards north . The grade of the limestone is not uniform along the strike but the bulk of the limestone ...
Page 149
... colour , fine grained and massive , but in some bands it is thinly bedded with many shale partings . The average composition of deposit No. 3 which contains practically all the proved reserves is CaO - 52.8 % , MgO - 0.65 % , SiO2-2.9 ...
... colour , fine grained and massive , but in some bands it is thinly bedded with many shale partings . The average composition of deposit No. 3 which contains practically all the proved reserves is CaO - 52.8 % , MgO - 0.65 % , SiO2-2.9 ...
Contents
VOLUME 102 PART | 1 |
Copper Lead and Zinc by P K Banerjee | 19 |
Gold by S Narayanaswami and M Ziauddin 4150 | 41 |
Copyright | |
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amphibolite Andhra Pradesh apatite Assam associated average bands base metal basins bauxite belt Bihar Block boreholes cement grade chalcopyrite chert Chowdhury chromite coalfields colour containing copper depth disseminations district dolomite drilling exploration fault ferruginous fields flux grade folds formation G.S.I. report Geol geological Ghosh gneiss gold goldfield Gondwana gossan grade limestone grained granite grey Gujarat hematite hill horizon hydrothermal India indicated inferred reserves intrusives iron Karanpura kyanite laterite lenses lenticular limestone localised located lodes Madhya Pradesh magmatic Maharashtra manganese manganese-ore massive metres million tonnes mineralisation minerals mines Mysore occur orebodies Orissa P₂O pegmatites phosphate phosphorite phyllites plateau Pre-Cambrian pyrite pyrite bed pyrrhotite quartz veins quartzite Rajasthan Raniganj region Riphean samples sandstone schist seams sedimentary sediments shales shear zone siliceous sillimanite Singhbhum stratigraphic strike length sub-basins sulphide Surv syncline Tamil Nadu tectonic thickness Udaipur ultramafic ultramafic bodies ultramafites upto varies Vindhyan width workable