AM_Abernathyite Formula: As U O9 (K H3) Name: Abernathyite Unit cell: 7.176 7.176 18.126 90.0 90.0 90.0 , V=933.40 Space group: P4/NCC (130)

Ross M , Evans H T , American Mineralogist , 49 (1964) p.1578-1602, Studies of the torbernite minerals (I): The crystal structure of abernathyite, and the structurally related compounds NH4(UO2AsO4).3H2O and K(H3O)(UO2AsO4)2.6H2O