Attention is now being given to Ni isotope systematics in hydrogenetic marine ferromanganese (Fe-Mn) crusts as paleoceanographic proxies. Previous work focused on identifying both mineralogy (post-depositional) and source effects (Gall et al. 2013; Gueguen 2016), particular regarding hydrothermal inputs the oceans response of biogeochemical cycling through time. The most important sink for Fe-M...

Based upon down core variations in OrMn ratio in sediment and in micronodules, Mn content, organic carbon and abundance of micronodules in two box cores from high and low sedimentation regions of the Bay of Bengal, 0–20 and 0–40 cm levels were identified as ‘‘Mn oxidation zone’’ in the western and the eastern regions of the bay. Despite similarity in bottom water O and organic carbon contents o...

In order to meet the industrial denitrification demands, inexpensive ferrous metals Mn and Fe have been chosen as raw materials for catalysts of CO-SCR, anti-sulfur performance ferromanganese can be greatly enhanced by Ce doping. this study, Cex-Mn0.8Fe0.2O2 were prepared co-precipitation, effects addition on structure morphology their denitration investigated with X-ray diffraction (XRD), scan...

Ferromanganese (Fe-Mn) crusts are potential marine deposits for many high-tech metals and exciting proxies recording the oceanic paleoenvironment. During their growth, phosphatization generally occurs, causing remobilization reorganization of elements minerals in Fe-Mn crusts. Rare earth plus yttrium (REY), well-known critical new emerging technologies, as well valuable geological proxies, impo...

Late Pleistocene–Holocene rocks from the western part of Cocos-Nazca Spreading Centre (C-NSC) include ferromanganese crusts that elucidate geochemistry and mineralogy a deep-sea geological setting. Six representative Fe-Mn crust samples were studied using petrological methods, such as optical transmitted light microscopy, energy dispersive X-ray fluorescence spectrometry, inductively coupled pl...