Zenzenite

Fe_2.45Mn_4.55O₁₅Pb₃

Holtstam, D.Linqvist, B.Johnsson, M.Norrestam, R.

The Canadian Mineralogist (1991) 29, 347-354

a=10.008Å   b=10.008Å   c=13.672Å

α=90°   β=90°   γ=120°