(Table 3b) Rare earth element contents transferred to leachates from ferruginous nodules and a crust of the Barents Sea

Leaching procedure has been made according to R. Chester and M.J. Hughes (1967; doi:10.1016/0009-2541(67)90025-3).Ce/Ce* = 2(Ce/Ce_NASC) / (La/La_NASC + Nd/Nd_NASC), where NASC is an index attributed to contents in the NASC (North American Shale Composite) reference shale.