Analytical data of manganese nodules and crusts at each station in the Aitutaki Passage

Manganese nodules and crusts from stations of the SO06 expedition (R/V Sonne) in the Aitutaki Passage have been selected for chemical analysis. Mn, Fe, Ni and Cu were analyzed onboard ship by X-ray fluorescence spectrometry and selected samples were re-analyzed by atomic absorption spectrophotometry in Aachen for calibration purposes. Co, Zn, Si and Al were analyzed by atomic absorption spectrophotometry on material dried at 105°C for 72 hrs and Ba and La by X-ray fluorescence spectroscopy in Aachen. U was determined by the delayed neutron counting technique at the Riso National Laboratory, Denmark. Material has been dried before analysis at 105°C for 72 hrs and results are presented as averages over various size fractions.