AM_Downeyite_1 Formula: Se O2 Name: Downeyite Unit cell: 8.3622 8.3622 5.0612 90.0 90.0 90.0 , V=353.91 Space group: P42/MBC (135)

Stahl K , Legros J P , Galy J , Zeitschrift fur Kristallographie , 202 (1992) p.99-107, The crystal structure of SeO2 at 139 and 286 K, Note: T = 286 K, Locality: synthetic