Trigonic great dodecahedron faceting

The  or tigdaf, also known as the accordion, is an orbiform polyhedron. It consists of 6 triangles and 6 pentagons. As its name suggests, it is a faceting of the great dodecahedron (and thus also a faceting of the icosahedron).

It appears as a cell of the small trigonal swirlprism.

Vertex coordinates
Its vertex coordinates are the same as those of the icosahedron.