Small spinoretrosnub tetrishexacositrishexacosichoron

The small spinoretrosnub tetrishexacositrishexacosichoron, or snarstuxtix, is a nonconvex uniform polychoron that consists of 600 great icosahedra and 600 small stellated dodecahedra (some of which lie 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 octahemioctahedra and 2400 cubohemioctahedra (forming 2400 compounds of one of each), 600 cuboctahedra (forming 120 antirhombicosicosahedra), 600 small dodecicosahedra, 600 icosidodecadodecahedra, and 600 small rhombidodecahedra.

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

It can be obtained as the blend of 5 small dipentary dishecatonicosihexacosihecatonicosachora and 5 small capped dipentary hexacositetrishecatonicosachora. In the process, some of the octahemioctahedron and cubohemioctahedron cells blend out.

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