Crystal data for Na₃Mg₂P₅O₁₆

Na₃Mg₂P₅O₁₆ is monoclinic, P2₁/c, Z = 2, with unit-cell parameters a = 5.177 (1), b = 6.853 (1), c = 18.628 (5) Å, β = 90.00 (4)°.