Great diretrosnub dishexacositetrishexacosichoron

The great diretrosnub dishexacositetrishexacosichoron, or gadrosid xutix, is a nonconvex uniform polychoron that consists of 1200 great icosahedra (falling into pairs in the same hyperplanes, forming 600 small retrosnub disoctahedra), 600 icosahedra, 4800 octahemioctahedra (forming 2400 compounds of two), 600 great dodecicosahedra, 600 great dodecicosidodecahedra, and 600 truncated great icosahedra.

Two great icosahedra (two compounds), one icosahedron, eight octahemioctahedra (eight compounds), five great dodecicosahedra, five great dodecicosidodecahedra, and five truncated great icosahedra join at each vertex.

It can be obtained as the blend of 5 great dipentary dishecatonicosihexacosihecatonicosachora and 5 great invertidipentary hecatonicosihexacosidishecatonicosachora. In the process, some of the octahemioctahedron cells blend out.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the great diretrosnub disnub decahecatonicosadishexacosichoron.