Lawsonbauerite

H₃₀Mg_2.81Mn_6.19O₃₈S₂Zn₄

Treiman, A. H.Peacor, D. R.

American Mineralogist (1982) 67, 1029-1034

a=10.50Å   b=9.64Å   c=16.41Å

α=90°   β=95.21°   γ=90°