Gyrated octahedral-hemitriangular honeycomb

The gyrated octahedral-hemitriangular honeycomb is a nonconvex uniform honeycomb. 6 and 6 apeirogonal antiprisms join at each vertex of this honeycomb.

This honeycomb can be formed from the tetrahedral-hemitriangular honeycomb by gyrating alternate layers of cells along triangular tilings, so that octahedra join to other octahedra, some triangular tilings split into apeirogonal antiprisms, and some are removed entirely.