Na2Mg(SO4)2*16H2O

H₃₂MgNa₂O₂₄S₂

Leftwich, K.Bish, D.L.Chen, C.H.

American Mineralogist (2013) 98, 1772-1778

a=6.5590(12)Å   b=6.6277(14)Å   c=14.441(3)Å

α=87.456(15)°   β=79.682(15)°   γ=65.847(13)°