Oxidation state of marine manganese nodules

Details Oxidation state of marine manganese nodules Oxidation state of marine manganese nodules

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48.2347p&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 48, Issue 11, pp.2347-2355

Physics

5

Scientific paper

Analyses of the bulk oxidation state of marine manganese nodules indicates that more than 98% of the Mn in deep ocean nodules is present as Mn(IV). The samples were collected from three quite different areas: the hemipelagic environment of the Guatemala Basin, the pelagic area of the North Pacific, and seamounts in the central Pacific. Results of the study suggest that todorokite in marine nodules is fully oxidized and has the following stoichiometry: (K, Na, Ca, Ba) .33 (Mg, Cu, Ni) .76 Mn 5 O 22 (H 2 O) 3.2 .

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