Records of the Geological Survey of India, Volume 94The Survey, 1959 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
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Page 233
... Zircons were separated from the non- magnetic concentrate ( mainly sillimanite , kyanite , and zircon ) obtained on a Frantz Isodynamic Separator , using Clerici solution of specific gravity 3.6 . 300-400 zircon grains were counted and ...
... Zircons were separated from the non- magnetic concentrate ( mainly sillimanite , kyanite , and zircon ) obtained on a Frantz Isodynamic Separator , using Clerici solution of specific gravity 3.6 . 300-400 zircon grains were counted and ...
Page 239
Geological Survey of India. TABLE 5 58.0 3.6 3.3 6.9 15.5 6.07 3.6 Zircon studies . - Most of the zircons are colourless. Non - Opaque Heavy Mineral Assemblage of Subarnarekha Sand . Hornblende . Tourmaline . Zircon . Sillimanite ...
Geological Survey of India. TABLE 5 58.0 3.6 3.3 6.9 15.5 6.07 3.6 Zircon studies . - Most of the zircons are colourless. Non - Opaque Heavy Mineral Assemblage of Subarnarekha Sand . Hornblende . Tourmaline . Zircon . Sillimanite ...
Page 240
Geological Survey of India. Zircon studies . - Most of the zircons are colourless ; coloured and zoned grains form less than 1 per cent . of the zircons present . About 2 per cent . of the zircons show abrasion . The zircons can be ...
Geological Survey of India. Zircon studies . - Most of the zircons are colourless ; coloured and zoned grains form less than 1 per cent . of the zircons present . About 2 per cent . of the zircons show abrasion . The zircons can be ...
Contents
GEOLOGICAL SURVEY OF INDIA | 190 |
STRUCTURE | 200 |
SUMMARY AND CONCLUSIONS | 209 |
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amphibole amphibole bearing quartzites amphibolites amygdaloidal aperture Balasore banded magnetite-hematite quartzites basalts beds biotite calcite cent chambers chondrules colour convolute laminations Cretaceous Deccan Traps deposits dipping district dolerites dune sands dykes east enstatite felspar ferruginous Figured specimen flows folds foraminifera formations G.S.I. Type garnet Genus Geol Geological Geologist gneisses grade grains granites grey quartzites heavy mineral hematite hornblende ilmenite intergrowth Kalahandi kilometres kyanite length Lenticulina limestone magnetite manganese content manganese-ore manganiferous khondalite Marginulina massive trap meta-intrusives meta-sediments metamorphism metres metres long metres wide Nishkhal occur old dunes olivine opaques outcrop pebbles phenocrysts plagioclase porphyritic porphyritic trap pyroxenes quartz quartzites Reuss ridge rutile samples sand dunes schistosity sediments shales siliceous sillimanite Soft vesicular species Subarnarekha Subarnarekha river Survey of India sutures thickness thin trend Utatur stage veins vesicles vesicular trap white gritty quartzites width Yerabali zircon