| Structural type | B4 |
| Common name | wurtzite |
| Definition | tetrahedrally coordinated lattice of two species (covalent bonding) or hcp lattice of large ions with the smaller ions occupying ½ of tetrahedral voids (ionic) |
| Prototype | ZnS |
| Pearson symbol | hP4 |
| Space group | 186 P63mc C6v4 |
| Chemical formula | AX |
| Bonding | covalent (donor-acceptor) or ionic |
| Atomic positions | A (2b) 1/3 2/3 0 (marked by C) |
| Coordination | AX, XA – 4 (deformed 4t) |
| Sublattices | A, X – hcp |
| PDB files | B4 (ideally coordinated) |
| Parameters | c/a≈1.63, zeta≈3/8 |
| Special values | ideal coordination for c/a=sqrt(8/3) and zeta=3/8 |
| Related structures | B3 is locally equivalent |
| Substances | some semiconducting compounds IV+IV, III+V, II+VI (ZnS, ZnO, BeO) |