Records of the Geological Survey of India, Volume 118, Parts 3-8government of India., 1983 - Geology 1867- includes the "Annual report of the Geological survey of India". |
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Page 29
... horizons have indicated the presence of PGE less than 10 ppb to 500 ppb . Major platinum concentration in the world have been noted in a sulphidic environ- ment and a few in oxidic environment . Although specks of pyrite , chalcopyrite ...
... horizons have indicated the presence of PGE less than 10 ppb to 500 ppb . Major platinum concentration in the world have been noted in a sulphidic environ- ment and a few in oxidic environment . Although specks of pyrite , chalcopyrite ...
Page 32
... horizons which might need detailed sampling to find out their economic viability . SAMPLING OF SELECTED HORIZONS Major platinum deposits of the world are located in the mafic and ultramafic variants of stratified complexes in sulphidic ...
... horizons which might need detailed sampling to find out their economic viability . SAMPLING OF SELECTED HORIZONS Major platinum deposits of the world are located in the mafic and ultramafic variants of stratified complexes in sulphidic ...
Page 34
... horizons , particularly the chromite horizons associated with the chromite ore seams of stratigraphic level I and II , correspon- ding to the upper and lower brown ore seams . 2 ) The rare concentrations of PGE in stream sediment ...
... horizons , particularly the chromite horizons associated with the chromite ore seams of stratigraphic level I and II , correspon- ding to the upper and lower brown ore seams . 2 ) The rare concentrations of PGE in stream sediment ...
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aeolian aerial alluvial amphibolite bands basin belt Bihar biotite channel Charnockite chromite chromitite clay coal field concentration Denudational hill deposits developed drainage Duasini environmental erosion FAAS flood plain fluvial folds foliation forest formation gabbro Ganjam garnet Geol Geological Survey geomorphic geomorphology gneiss gold grains granite gneiss granitised amphibolite groundwater hornblende iron khondalite Kumari land landform landuse laterite Limonite lineament Manbazar Surface massive amphibolite ment mineralised minerals mining nala ND ND Noa Dihing Opx cumulate Orissa oxidation parent rocks pediplain PG elements plagioclase platinum group ppm ppm ppm Purulia district Quarry quartz quartzite Quaternary Records Volume Rohtak district Rushikulya river Sambhar Salt Lake samples sandstone schistose schistose amphibolite sediments shear zone slopes soil sq km sqkm structures Survey of India Taptapani terraces Tetla thickness tion Tirap district trend ultramafic valley varies West Bengal