Bi2Ga4O9
Tutov, A.G.Markin, V.N.
Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy (1970) 6, 2014-2017
a=7.93Å b=8.31Å c=5.92Å
α=90° β=90° γ=90°
Bi2Fe4O9
a=7.94Å b=8.44Å c=6.01Å