AM_Gudmundite_1 Formula: Fe Sb S Name: Gudmundite Unit cell: 10.0 5.93 6.73 90.0 90.0 90.0 , V=399.09 Space group: B121/D1 (14)

Buerger M J , American Mineralogist , 24 (1939) p.183-184, The crystal structure of gudmundite