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    Size, surface texture, chemical composition and mineralogy interrelations in ferromanganese nodules of central Indian Ocean

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    Indian_J_Mar_Sci_18_201.pdf (306.5Kb)
    Date
    1989
    Author
    Banakar, V.K.
    Pattan, J.N.
    Jauhari, P.
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    Abstract
    Fiftyseven ferromanganese nodules, classified into 3 size class (4,4-6 and 6-8 cm diam.), from the siliceous sediments of central Indian Ocean were analysed for transition metals and representative sample from each size class for mineralogy. Smaller (4cm diam.) nodules are invariably rough and very rough and spherical; they have higher concentration of Mn, Ni and Cu. The intensity of todorokite reflection decreases in higher size (4 cm diam.) class. These observations suggest that the smaller nodules appear to have been influenced more by diagenetic processes that the larger nodules
    URI
    http://drs.nio.org/drs/handle/2264/7289
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