AM_Thenardite Formula: Na2 S O4 Name: Thenardite Unit cell: 9.829 12.302 5.868 90.0 90.0 90.0 , V=709.54 Space group: FDDD (70)

Hawthorne F C , Ferguson R B , The Canadian Mineralogist , 13 (1975) p.181-187, Anhydrous sulphates. I: Refinement of the crystal structure of celestite, with an appendix on the structure of thenardite