AM_Realgar_3 Formula: As S Name: Realgar Unit cell: 9.38 13.569 6.593 90.0 105.55 90.0 , V=808.42 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