Bathymetry map of the Magellan Seamount Cluster. Black dotted square is open seamount (OSM) XX where ferromanganese crust collected. Upper right map is three-dimensional bathymetry of OSM-XX and Yellow Square indicates epibenthic sledge site.|@|~(^,^)~|@|Photographs of ferromanganese crust(OSM-XX_EBS04_20). Orange dotted square is μ-XRF element mapping analysis area and red box area indicates μ-XRF quantitative analysis area. White dotted layer is XRD analysis area.|@|~(^,^)~|@|μ-XRF mapping of Ferromanganese crust collected from western Pacific Magellan Seamounts. Color intensity indicates elemental intensity.|@|~(^,^)~|@|Vertical profiles of chemical composition in wt.% obtained with μ-XRF quantitative analysis of ferromanganese crust from western Pacific Magellan Seamount.|@|~(^,^)~|@|Vertical profiles of Co/Mn ratio and Mn/Fe ratio along a transect across Fe-Mn crust from western Pacific Magellan Seamounts.|@|~(^,^)~|@|Representative X-ray diffraction patterns of Fe-Mn crust from western Pacific Magellan Seamount. Vernatide(V), Quartz(Q), Feldspar(F), Smectite(S) and Carbonate fluorapatite(CFA) were consisted in Fe-Mn crust.|@|~(^,^)~|@|Age-quantitative analysis point plots derived from Co chronology.

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