This repository contains raw and processed data for the paper: "Depositional and grain-scale controls on sandstone heterogeneity in arid continental settings: the Dutch Rotliegend " by Mulder et al. (2026). The dataset comprises quantitative point-count data from 310 sandstone samples, documenting detrital and authigenic mineral composition, grain-size and sorting characteristics, petrophysical properties, and sedimentological attributes of Rotliegend sandstones from the Groningen gas field.