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    Mineral chemistry, bulk composition and source of the ferromanganese nodules nuclei from the Central Indian Ocean Basin

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    Geo-Mar_Lett_18_66.pdf (203.5Kb)
    Date
    1998
    Author
    Banerjee, R.
    Miura, H.
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    Abstract
    Nuclei of ferromanganses nodules from the Central Indian Ocean Basin show the presence of abundant plagioclase feldspars (1-3 mm diameter). They are indentified as calcic plagioclase (peak at 3.20 A). Plagioclase chemical composition (CaO 6.4-20.5%) shows a range of An 44-90%. The mineral chemistry, together with the bulk composition of the host nuclei, indicate that they are of bassaltic composition. A possible source could be the numerous seamounts in this basinal area
    URI
    http://drs.nio.org/drs/handle/2264/970
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