Citation: Mrose, M. E.; Appleman, D. E. (1962). The crystal structures and crystal chemistry of vayrynenite, (Mn,Fe)Be(PO4)(OH), and euclase, AlBe(SiO4)(OH) Locality: the Viitaniemi pegmatite in the parish of Erajarvi in central Finland. Zeitschrift fur Kristallographie, 117, pp. 16-36.