The surface composition of Ceres’ Ezinu quadrangle analyzed by the Dawn mission

•Carbonate-rich surface compositions are associated with H2O ice-rich crust.•Dark, smooth lobate materials at the foot of Occator's northern rim have a noticeably strong positive spectral slope that may be due to small grain size or the presence of spectrally featureless organic molecules such as tholins.•The deeper absorption band depth of OH and NH4 on the rim of several impact craters is consistent with a stratification of the phyllosilicate abundance.