Citation: Chukanov, Nikita V.; Aksenov, Sergey M.; Rastsvetaeva, Ramiza K.; Kristiansen, Roy; Pekov, Igor V.; Belakovskiy, Dmitriy I.; Van, Konstantin V.; Bychkova, Yana V.; Britvin, Sergey N. (2017). Crystal structure of the OH-dominant gadolinite-(Y) analogue (Y,Ca)2(Fe,\\square )Be2Si2O8(OH,O)2 from Heftetjern pegmatite, Norway.. Acta crystallographica Section B, Structural science, crystal engineering and materials, 73, pp. 899-906.