Citation: Belokoneva, E.L.; Borisova, T.A.; Dimitrova, O.V. (2003). New rubidium pentaborate Rb (B5 O7 (O H)2) * 0.5(H2 O) with a 5:(4*Delta+1T) anionic block and its relation to larderellite (N H4) (B5 O7 (O H)2) * (H2 O) on the basis of the OD theory. Kristallografiya, 48, pp. 634-641.