Records of the Geological Survey of India, Volume 77, Issue 6Geological Survey of India, 1942 - Earthquakes |
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Page 3
... heavy mineral separation . The fol- lowing percentages of heavies were obtained : --- Sample No. 1 2 3 4 5 Per cent . Per cent . Per cent . Per cent . Per cent . Grade ( a ) 1.80 1-33 1-52 1-31 0.60 Grade ( b ) 2.00 2-62 2-33 1-32 2-54 ...
... heavy mineral separation . The fol- lowing percentages of heavies were obtained : --- Sample No. 1 2 3 4 5 Per cent . Per cent . Per cent . Per cent . Per cent . Grade ( a ) 1.80 1-33 1-52 1-31 0.60 Grade ( b ) 2.00 2-62 2-33 1-32 2-54 ...
Page 4
The heavy mineral percentage in the sample No. 6 varies from 0-40 to 0.90 roughly . The heavies of different grain sizes thus obtained were examined under the microscope and the following suite , containing as many as 13 mineral species ...
The heavy mineral percentage in the sample No. 6 varies from 0-40 to 0.90 roughly . The heavies of different grain sizes thus obtained were examined under the microscope and the following suite , containing as many as 13 mineral species ...
Page 10
... percentage of heavy minerals as we pass from coarser to finer grades . This may be explained by the fact that ... heavies in the finer grades is that most of the mineral species which we find in the heavies are nothing but ...
... percentage of heavy minerals as we pass from coarser to finer grades . This may be explained by the fact that ... heavies in the finer grades is that most of the mineral species which we find in the heavies are nothing but ...
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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