AM_Realgar_2 Formula: As S Name: Realgar Unit cell: 9.36 13.573 6.59 90.0 105.71 90.0 , V=805.94 Space group: P121/N1 (14)

Kyono A , Kimata M , Hatta T , American Mineralogist , 90 (2005) p.1563-1570, Light-induced degradation dynamics in realgar: in situ structural investigation, using single crystal X-ray diffraction and X-ray photoelectron spectroscopy