Trace element partitioning and redox states in a ferromanganese nodule from the SW Pacific Marcus, M. A. ; Fakra, S. C. ; Toner, B. M. ; Horn, G. ; Edwards, K. J. Abstract Publication: Geochimica et Cosmochimica Acta Supplement Pub Date: June 2009 Bibcode: 2009GeCAS..73Q.833M