24-7 step prism

The 24-7 step prism, also known as the digonal double triswirlprism, is a convex isogonal polychoron, member of the step prism family. It has 24 rhombic disphenoids and 96 phyllic disphenoids of two kinds as cells. Together with its dual, it is the third in an infinite family of digonal antiprismatic swirlchora and the second in an infinite family of octagonal dihedral swirlchora.

Vertex coordinates
Coordinates for the vertices of a 24-7 step prism of circumradius $\sqrt{2}$ are given by: where k is an integer from 0 to 23.
 * (sin(2πk/24), cos(2πk/24), sin(14πk/24), cos(14πk/24)),