CuNb3O8
Marinder, B.O.Werner, P.E.Wahlstroem, E.Malmros, G.
Acta Chemica Scandinavica, Series A: (28,1974-) (1980) 34, 51-56
a=15.365Å b=5.0717Å c=7.5266Å
α=90° β=107.18° γ=90°
Bi2O3
Malmros, G.
Acta Chemica Scandinavica (1970) 24, 384-396
a=5.8486Å b=8.1661Å c=7.5097Å
α=90° β=113.00° γ=90°