AM_Geminite
Formula: Cu As H3 O5
Name: Geminite
Unit cell: 9.841 10.818 15.733 95.71 90.94 103.11 , V=1621.87
Space group: C-1 (2)

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1111-1118, The crystal structure of geminite, Cu(AsO3OH)(H2O), a heteropolyhedral sheet, structure