Crystal data for triuraniumpentoxide pyrophosphate, U₃O₅P₂O₇

U₃O₅P₂O₇ is orthorhombic, space group Cmca or C2cb(Aba2), with a = 7.018(2), b = 9.057(1), c = 16.009(3) Å, V = 1017.5(6) ų, Z = 4, D_x = 6.318 Mg m^{− 3}. A Nonius Guinier camera and Cu Kα radiation (λ = 1.5418 Å) was used. Indexed powder data are given and compared with previous data. The JCPDS Diffraction File No. for U₃O₅P₂O₇ is 34-1984.