Records of the Geological Survey of India, Volume 129, Part 5Government of India, 1994 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 15
... width of 7m . Thick greasy quartz veins of over 25m strike length and 5m width occupying the core are the important locales of mica mineralisa- tion . Pure milky white quartz and very large feldspars in the pegmatites are important ...
... width of 7m . Thick greasy quartz veins of over 25m strike length and 5m width occupying the core are the important locales of mica mineralisa- tion . Pure milky white quartz and very large feldspars in the pegmatites are important ...
Page 65
... width from 0.6 to 3.8m have been identified by close trenching and sampling . The analytical results of most of the samples gave gold values ranging from 1 to 4 g / t , maximum being 19.10 g / t . Drilling in the main zone from 18 drill ...
... width from 0.6 to 3.8m have been identified by close trenching and sampling . The analytical results of most of the samples gave gold values ranging from 1 to 4 g / t , maximum being 19.10 g / t . Drilling in the main zone from 18 drill ...
Page 133
... width of the mineralised shear zone varies from 4 to 34 m . The shear zone imme- diately north of Ponnaiyar is continuously traceable for 300 m with a width of 20 to 34 m , beyond which for another 150 m the shear zone is split , with ...
... width of the mineralised shear zone varies from 4 to 34 m . The shear zone imme- diately north of Ponnaiyar is continuously traceable for 300 m with a width of 20 to 34 m , beyond which for another 150 m the shear zone is split , with ...
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Common terms and phrases
acid volcanics amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly zones anorthosite assessment auriferous banded iron formation beach ridges bedrock beds BIF bands biotite biotite gneiss block boreholes carried charnockite chert Chitradurga clay delineated deposits depth Dharwar dips dolerite drilling dykes east eastern emplaced ENE-WSW excavated exposed field season folds foliation foundation gabbro geochemical GEOLOGICAL MAP geophysical geotechnical investigations gneiss Gneissic gold mineralisation granite gneiss granulite gravity grey grout hornblende INDEX indicated intrusives joints KARNATAKA KERALA kimberlite laterite lignite limestone lineament located mafic magnetic metabasalt migmatites mineral mineralised zones NE-SW NNW-SSE NW-SE occur overburden pegmatite Plate power house PROJECT pyrite quartz quartz veins quartzite regional reservoir river rock types samples scale schist belt schistose sediments shear zone slope soil southern spillway sq km strike length structural studies sulphides surveys TAMIL NADU thickness traversed trenching trending tunnel ultramafic upto vertical weathered width