Samfowlerite

Be_7.24Ca₁₄H₆Mn₃O₅₈Si₁₄Zn_2.76

Rouse, R. C.Peacor, D. R.Dunn, P. J.Su, S.-C.Chi, P. H.Yeates, H.

The Canadian Mineralogist (1994) 32, 43-53

a=9.068Å   b=17.992Å   c=14.586Å

α=90°   β=104.86°   γ=90°