Joesmithite

Be_1.694Ca_1.9Fe_2.449H₂K_0.072Mg_2.551Na_0.1O₂₄Pb_0.928Si_6.306

Moore, P. B.Davis, A. M.Van Derveer, D. G.Sen Gutpa, P. K.

Mineralogy and Petrology (1993) 48, 97-113

a=9.915Å   b=17.951Å   c=5.243Å

α=90°   β=105.95°   γ=90°