(Na.118 Ca.553 Mg1.087 Fe.125 Fe.025 Al.119) Si1.973 O6

Al_0.119Ca_0.553Fe_0.15Mg_1.087Na_0.118O₆Si_1.973

McCallister, R.H.Finger, L.W.Ohashi, Y.

Carnegie Institution of Washington: Yearbook (1974) 73, 518-522

a=9.699Å   b=8.871Å   c=5.251Å

α=90°   β=107.03°   γ=90°