Tetrahedrite

Ag_2.118As_1.3Cu_7.68Fe_1.44S₁₃Sb_2.7

Johnson, M. L.Burnham, C. W.

American Mineralogist (1985) 70, 165-170

a=10.530Å   b=10.530Å   c=10.530Å

α=90°   β=90°   γ=90°