A geometric honeycomb is a space-filling of polyhedral or higher-dimensional cells, so that there are no gaps. It is an example of the more general mathematical tiling or tessellation in any number of dimensions.
A lower symmetry form, index 6, of this honeycomb can be constructed with [(6,3,4,3*)] symmetry, represented by a trigonal trapezohedron fundamental domain, and a Coxeter diagram.
A radial subgroup symmetry, index 6, of this honeycomb can be constructed with [(4,3,6,3*)], represented by a trigonal trapezohedron fundamental domain, and Coxeter diagram.
Coxeter, The Beauty of Geometry: Twelve Essays, Dover Publications, 1999 ISBN0-486-40919-8 (Chapter 10: Regular honeycombs in hyperbolic space, Summary tables II, III, IV, V, p212-213)