This dataset contains sedimentary parameter grain size distribution measured from Multicorer (MUC) samples from the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR, Germany) and Global Sea Mineral Resources (GSR, Belgium) license areas in the Clarion Clipperton Fracture Zone collected on onboard the RV Sonne during expeditions SO268 (Leg1 and Leg2) in 2019. Values are given in their respective units (SI) and have been collected and measured by the Marine Biology Research Group of Ghent University (Belgium).