AM_As2O(SO4)2
Formula: As2 S2 O9
Name: As2O(SO4)2
Unit cell: 6.65 6.671 16.612 90.0 94.34 90.0 , V=734.83
Space group: P1C1 (7)

Mercier R , Douglade J , Acta Crystallographica, Section B , 38 (1982) p.1731-1735, Structure cristalline d un oxysulfate d arsenic(III) As2O(SO4)2, (ou As2O3*(SO3)2), Note: AnisoB s from ICSD