Macfallite

Al_0.27Ca₂Cu_0.03H₃Mg_0.09Mn_2.511O₁₄Si₃V_0.009

Nagashima, M.Rahmoun, N. S.Alekseev, E. V.Geiger, C. A.Armbruster, T.Akasaka, M.

American Mineralogist (2008) 93, 1851-1857

a=8.959Å   b=6.072Å   c=10.218Å

α=90°   β=110.75°   γ=90°