O3RbU
Van den Berghe, S.Leenaers, A.Ritter, C.
Journal of Solid State Chemistry (2004) 177, 2231-2236
a=4.3222Å b=4.3222Å c=4.3222Å
α=90° β=90° γ=90°
NaO3U
a=5.7739Å b=5.9051Å c=8.2784Å