Great snubspinosnub trishexacositetrishexacosichoron

The great snubspinosnub trishexacositetrishexacosichoron, or gosnastixtux, is a nonconvex uniform polychoron that consists of 600 great icosahedra and 600 small stellated dodecahedra (falling into pairs in the same hyperplanes, forming 600 compounds of one of each), 600 icosahedra and 600 great dodecahedra (forming 600 compounds of one of each), 2400 cuboctahedra and 2400 cubohemioctahedra (forming 2400 compounds of one of each), 600 octahemioctahedra (forming 120 icosidisicosahedra), 600 great rhombidodecahedra, 600 great dodecicosahedra, and 600 rhombidodecadodecahedra.

One great icosahedron and one small stellated dodecahedron (two compounds), one icosahedron and one great dodecahedron (two compounds), four cuboctahedra and four cubohemioctahedra (eight compounds), one octahemioctahedron (one compound), five great rhombidodecahedra, five great dodecicosahedra, and five rhombidodecadodecahedra join at each vertex.

It can be obtained as the blend of 5 great dipentary hecatonicosihexacosidishecatonicosachora and 5 great capped dipentary tetrishecatonicosihexacosichora. In the process, some of the cuboctahedron and cubohemioctahedron cells blend out.

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