| Structural type | C3 |
| Common name | cuprite |
| Definition | fcc lattice of cations with anions occupying ¼ of tetrahedral voids |
| Prototype | Cu2O |
| Pearson symbol | cP6 |
| Space group | 224 Pn-3m Oh4 |
| Chemical formula | A2X |
| Bonding | ionic |
| Atomic positions | A (4b) 0 0 0 (marked by C) |
| Coordination | XA – 4t, A – 2X + 12A (12co) |
| Sublattices | A – fcc |
| PDB files | C3 |
| Substances | Cu2O, Ag2O, Pb2O |