AM_Metahohmannite
Formula: Fe2 S2 O13 H8
Name: Metahohmannite
Unit cell: 7.3484 9.771 7.1521 91.684 98.523 86.39 , V=506.75
Space group: P-1 (2)

Scordari F , Ventruti G , Gualtieri A F , American Mineralogist , 89 (2004) p.365-370, The structure of metahohmannite, Fe2[O(SO4)2].4H2O,, by in situ synchrotron powder diffraction