Left: initial composition used for the simulation of compaction and differentiation of Ceres. Presence of abundant aqueously altered species is based on the calculations of the thermal evolution of small precursors that clearly predict aqueous alteration for the building blocks of Ceres (see Sect. 4.1 of this paper). Right: sketch of the initial three-phase micro-structure with rock grains, ice grains and voids (dust porosity).