Great ditrigonary hexacosihecatonicosachoron

The great ditrigonary hexacosihecatonicosachoron, or gidtixhi, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra and 120 regular icosahedra. 12 icosahedra and 20 tetrahedra join at each vertex, with a great ditrigonary icosidodecahedron as the vertex figure.

It has the same set of triangular faces as the small ditrigonary hexacosihecatonicosachoron.

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