Al0.525Ca0.492Fe0.475Na0.508O6Si2
Curtis, L.Gittins, J.Kocman, V.Rucklidge, J. C.Hawthorne, F. C.Ferguson, R. B.
The Canadian Mineralogist (1975) 13, 62-67
a=9.622Å b=8.826Å c=5.279Å
α=90° β=106.92° γ=90°
Al0.481Ca0.466Fe0.518Na0.534O6Si2