(Na0.58Ca0.01)(Li1.05Al1.95)Al6(BO3)3(Si6O18)(OH)3(O0.66F0.34)

Al_7.95B₃Ca_0.01F_0.34H₃Li_1.05Na_0.58O_30.66Si₆

Novak, M.Ertl, A.Povondra, P.Galiova, M.V.Rossman, G.R.Pristacz, H.Prem, M.Giester, G.Gadas, P.Skoda, R.

American Mineralogist (2013) 98, 1886-1892

a=15.809(2)Å   b=15.809(2)Å   c=7.089(1)Å

α=90°   β=90°   γ=120°