Polylithionite

Al_1.16F_1.52Fe_0.02H_0.48KLi_1.63Mg_0.12O_10.48Si₄

Swanson, T. H.Bailey, S. W.

Clays and Clay Minerals (1981) 29, 81-90

a=5.199Å   b=9.026Å   c=19.9690Å

α=90°   β=95.41°   γ=90°