Calderonite

FeHO₉Pb_1.937V_1.912

Gonzalez del Tanago, J.La Iglesia, A.Rius, J.Santin, S. F.

American Mineralogist (2003) 88, 1703-1708

a=7.649Å   b=6.101Å   c=8.904Å

α=90°   β=112.23°   γ=90°