Wyartite: Burns and Finch, Am Min 84 (1999) 1456-1460 Wyartite: Crystallographic evidence for the first pentavalent-uranium mineral 11.2706 7.1055 14.807 90 110 90 P1 U1 .611 .310 .254 3 O1 .511 .410 .254 2 anions S .511 .310 .254 end