AM_Downeyite Formula: Se O2 Name: Downeyite Unit cell: 8.3218 8.3218 5.0541 90.0 90.0 90.0 , V=350.01 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 = 139 K, Locality: synthetic