Ca (B2 O (O H)6) (H2 O)2

B₂CaH₁₀O₉

Egorov-Tismenko, Yu.K.Barishnikov, J.M.Belov, N.V.Shashkin, D.N.Simonov, M.A.

Doklady Akademii Nauk SSSR (1973) 208, 1082-1085

a=7.875Å   b=6.534Å   c=8.104Å

α=111.53°   β=111.33°   γ=72.7°