Epididymite-potassian

Be₂K₂O₁₅Si₆

Naumova, I. S.Pobedimskaya, E. A.Pushcharovskii D YuBelov, N. V.Altukhova Yu, N.

Doklady Akademii Nauk SSSR (1976) 229, 856-859

a=7.485Å   b=15.453Å   c=11.418Å

α=90°   β=90°   γ=90°