Mg6 Si7 Cu16

Cu₁₆Mg₆Si₇

Bergman, G.Waugh, L.H.

Acta Crystallographica (1,1948-23,1967) (1956) 9, 214-217

a=11.65Å   b=11.65Å   c=11.65Å

α=90°   β=90°   γ=90°