AM_Ungemachite Formula: Fe S6 N2 K3 Na8 O36 H12 Name: Ungemachite Unit cell: 10.898 10.898 24.989 90.0 90.0 120.0 , V=2570.24 Space group: R11-3 (1)

Groat L A , Hawthorne F C , American Mineralogist , 71 (1986) p.826-829, Structure of ungemachite, K3Na8Fe(SO4)6(NO3)2.6H2O, a mixed, sulfate-nitrate mineral, Note U(1,2) for N and Na1 have been altered to match symmetry constraints.