Co3O4 spinel (Fd-3m), 56-atom conventional cell. CORRECTED: rebuilt with pymatgen origin choice 1 (8a=(0,0,0), 16d=(1/8,1/8,1/8), 32e=(0.389,0.389,0.389)). Previous version had overlapping oxygen atoms due to ASE Spacegroup(227, setting=2) bug in 32e symmetry expansion. Min O-O distance now 2.54 Å (was 0.32 Å).