[Wien] structure confusion ?

[Zaid]

Respected Community

I have a little confusion in understanding the spinel structure. I am
attaching a perfect MgAl2O4 spinel structure. Why this structure shows more
than 8 Mg (Yellow in colour) elements ? There should be 8 Mg, 16 Al and 32
O atoms that adds up to give 56 atoms. I also see more no of atoms in
Xcrysden.

Best wishes
Zaid
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