Records of the Geological Survey of India, Volume 102Geological Survey of India, 1972 - Earthquakes |
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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 148
... colour , hard , compact , fine to medium grained and crystalline . It contains streaks , bands and lenses of chert , quartzite and banded ferruginous quartzite and is under- lain by quartzite and quartz - sericite - schist and overlain ...
... colour , hard , compact , fine to medium grained and crystalline . It contains streaks , bands and lenses of chert , quartzite and banded ferruginous quartzite and is under- lain by quartzite and quartz - sericite - schist and overlain ...
Contents
VOLUME 102 PART | 1 |
Copper Lead and Zinc by P K Banerjee | 19 |
4150 | 41 |
Copyright | |
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amphibolite Andhra Pradesh Assam associated average bands base metal basin bauxite bauxite deposits belt Bihar Block boreholes cement grade chalcopyrite chert Chowdhury chromite coal coalfields colour containing copper depth disseminations district dolomite drilling exploration ferruginous fields fluorite flux grade folds formation G.S.I. report Geol geological Ghosh gneiss gold goldfield Gondwana gossan grade limestone grained granite grey Gujarat hematite hill Himalaya 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 Mysore occur orebodies Orissa 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 sulphide Surv syncline Tamil Nadu tectonic thickness Udaipur ultramafic ultramafic bodies ultramafites upto varies Vindhyan width workable