Hingganite-(Y) Yakubovich O V, Matvienko E N, Voloshin A V, Simonov M A Soviet Physics Crystallography 28 (1983) 269-271 The crystal structure of hingganite-(Yb), (Y0.51TR0.36Ca0.13)*Fe0.065Be[SiO4](OH) Locality: amazonite pegmatites, Kola peninsula, Russia _database_code_amcsd 0015584 9.888 7.607 4.740 90 90.45 90 P2_1/a atom x y z occ Biso Y .33301 .1089 .9987 .51 .80 Yb .33301 .1089 .9987 .36 .80 Ca .33301 .1089 .9987 .13 .80 Si .0791 .2763 .5190 .33 Be .335 .413 .448 .1 Fe 0 0 0 .065 .9 O1 .1950 .347 .300 .5 O2 .1485 .109 .687 .6 O3 .0332 .412 .764 .5 O4 .4499 .284 .326 .5 OH .3305 .412 .786 .5