#196
F23
Example – ZnSO4
H-ZnSO4, das erste Sulfat mit einer kubischen H-Cristobalit-Struktur
Spiess, M.; Gruehn, R.
Naturwissenschaften (1978) 65, p594-p594
ZnO4 tetrahedra (silver)
SO4 tetrahedra (yellow)
The Fascination of Crystals and Symmetry
Crystals are fascinating objects.
The Fascination of Crystals and Symmetry 
The illustration shows a #216 crystal, nope? The crystal contains mirror planes, but in group #196 you should not have any.
Thanks for your comment! I will check this asap after returning from my holiday!
kind regards!
Frank
Dear Tomas,
I just checked the structure and although the original data set (and the CIF) was published as F23 your are right, the coordinate set of ZnSO4 shows clearly F-43m symmetry (#216 as you said)! Therefore, I will inform the FIZ Karlsruhe (editor of the ICSD) of the wrong data, will look for another compound, which truly shows F23 symmetry and will update the entry #196 of this space group list soon!
thanks again and all the best
Frank