AM_Humberstonite Formula: N2 S6 K3 Mg Na8 O36 Name: Humberstonite Unit cell: 10.9055 10.9055 24.3949 90.0 90.0 120.0 , V=2512.59 Space group: R11-3 (1)

Burns P C , Hawthorne F C , The Canadian Mineralogist , 32 (1994) p.381-385, The crystal structure of humberstonite, a mixed sulfate-nitrate mineral