(Table 4, page 427) Chemical composition of radiometrically dated Pacific Ocean manganese nodules - Seth Krishnaswami (PANGAEA, 1976)
In supplement to: Krishnaswami, S (1976): Authigenic transition elements in Pacific pelagic clays. Geochimica et Cosmochimica Acta, 40(4), 425-434, https://doi.org/10.1016/0016-7037(76)90007-7