Na2 Mn2 (Si2 O7)

Mn₂Na₂O₇Si₂

Astakhova, L.P.Simonov, V.I.

Kristallografiya (1969) 14, 3-8

a=8.757Å   b=13.294Å   c=5.744Å

α=90°   β=90.17°   γ=90°