Records of the Geological Survey of India, Volume 102Geological Survey of India, 1972 - Earthquakes |
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Page 15
... minor lenses and pockets of chromite , usually around 6 to 7 m . in length and 2 to 3 m . in width . According to M. A. Alwar , S. Roy Chowdhury , B. Dayal and T. K. Guha Sarkar ( in Roy , 1964 ) the serpentines carry 0.2 to 0.4 % Ni ...
... minor lenses and pockets of chromite , usually around 6 to 7 m . in length and 2 to 3 m . in width . According to M. A. Alwar , S. Roy Chowdhury , B. Dayal and T. K. Guha Sarkar ( in Roy , 1964 ) the serpentines carry 0.2 to 0.4 % Ni ...
Page 27
... minor chalcopyrite and covellite . Since the oxidised zone extends down to a depth of more than 150 m . from the surface , preliminary drilling to shallow depths could not reach the primary zone of mineralisation . Deep drilling is in ...
... minor chalcopyrite and covellite . Since the oxidised zone extends down to a depth of more than 150 m . from the surface , preliminary drilling to shallow depths could not reach the primary zone of mineralisation . Deep drilling is in ...
Page 67
... minor folds , shears and tension frac- tures . The ore , which originally contained hematite and martite are laminated , has been affected in various degrees by limonitisation , and also lateritisation at the surface . The orebody is ...
... minor folds , shears and tension frac- tures . The ore , which originally contained hematite and martite are laminated , has been affected in various degrees by limonitisation , and also lateritisation at the surface . The orebody is ...
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