AM_Claudetite
Formula: As2 O3
Name: Claudetite
Unit cell: 5.25 12.87 4.54 90.0 93.82 90.0 , V=306.07
Space group: P121/N1 (14)

Frueh A J , American Mineralogist , 36 (1951) p.833-850, The crystal structure of claudetite (monoclinic As2O3)