AM_Parakeldyshite Formula: Na2 Zr Si2 O7 Name: Parakeldyshite Unit cell: 6.66 8.83 5.42 92.75 94.25 72.33 , V=302.76 Space group: P-1 (2)

Voronkov A A , Shumyatskaya N G , Pyatenko Y A , Journal of Structural Chemistry , 11 (1970) p.866-867, Crystal structure of a new natural modification of Na2Zr[Si2O7], Locality: synthetic