Rhombic small hecatonicosihexacosichoron

The rhombic small hecatonicosihexacosichoron, or rashix, is a nonconvex uniform polychoron that consists of 600 truncated tetrahedra, 120 rhombicosahedra, and 1200 triangular prisms. Two truncated tetrahedra, two rhombicosahedra, and two triangular prisms join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the small rhombated small stellated hecatonicosachoron.