In a previous article, we have proposed that the large scale structure
network generated by large scale magnetic fields could consist of a n
etwork of octahedra only contacting at their vertexes. Assuming such a
network could arise at different scales producing a fractal geometry,
we study here its properties, and in particular how a sub-octahedron
network can be inserted within an octahedron of the large network. We
deduce that the scale of the fractal structure would range from approx
imate to 100 Mpc, i.e. the scale of the deepest surveys, down to about
10 Mpc, as other smaller scale magnetic fields were probably destroye
d in the radiation dominated Universe.