This dataset comprises solid-phase bulk sediment manganese, iron and aluminum contents from sediment cores, which were retrieved by a multiple corer (MUC) during RV SONNE expedition SO239 in 2015. During this cruise, different European contract areas for the exploration of polymetallic nodules in the area of the Clarion-Clipperton Zone (CCZ) were visited (BGR, IOM, GSR, IFREMER), which are currently being explored in light of potential future deep-sea mining. Furthermore, one of the protected Areas of Particular Environmental Interest (APEI), more precisely the APEI3 north of the CCZ, was visited.The dataset was produced in the laboratories of the Alfred Wegener Institute (AWI) Bremerhaven, Germany.

Supplement to: Volz, Jessica B; Liu, Bo; Köster, Male; Henkel, Susann; Koschinsky, Andrea; Kasten, Sabine (2020): Post-depositional manganese mobilization during the last glacial period in sediments of the eastern Clarion-Clipperton Zone, Pacific Ocean. Earth and Planetary Science Letters, 532, 116012