Records of the Geological Survey of India, Volume 77, Issue 6Geological Survey of India, 1942 - Earthquakes |
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Page 4
... Description of Important Minerals . Green variety ; pleochroic . Grains are usually elongated , and platy with frayed ends . Irregularly fractured grains are not uncommon . Some grains are non - pleochroic . MAGNETITE : Occurs as ...
... Description of Important Minerals . Green variety ; pleochroic . Grains are usually elongated , and platy with frayed ends . Irregularly fractured grains are not uncommon . Some grains are non - pleochroic . MAGNETITE : Occurs as ...
Page 5
F : d s ed Lic SO to re in Description of Important Minerals . 5 GARNET : length . In some grains inclusions of iron ores are seen . Some crystals show oblique extinction and higher polarisa- tion colour and may be referred to as ...
F : d s ed Lic SO to re in Description of Important Minerals . 5 GARNET : length . In some grains inclusions of iron ores are seen . Some crystals show oblique extinction and higher polarisa- tion colour and may be referred to as ...
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Common terms and phrases
1.-Jurassic A. K. Roy A. L. Coulson Argada Asansol ASSEMBLAGES OF DAMODAR Average B. C. Roy Bhojudih Biotite Burma Calcutta cent centre Chapadanga Cretaceous crystals Damodar Bridge Damodar River sands Description of Important different grades E. L. G. Clegg Epidote finer grades fractured grains Frequencies of Minerals frequency numbers Garnet Geological Survey grades of sands HEAVY MINERAL ASSEMBLAGES heavy mineral suite Hornblende inclusions J. A. Dunn J. B. Auden Kulgachia and Bagnan Leucoxene LXXVII M. R. Sahni M. S. Krishnan Magnetite and Ilmenite Mechanical Analyses Memoir Mica Mineral Content Figures mineral species Mohuda Monazite nearly rounded grains Nil Nil Nil non-pleochroic Occurs as irregular percentage of heavies Pink and brown Pink and colourless pink variety Plate Press Price Prismatic grains Professional Paper river bed Rutile S. R. Narayana Rao samples of sands show zoning sieving Southern Shan Sphene Survey of India TOURMALINE VOLUME LXXVI Zircon Zoisite وو دو دو