Beryl Yakubivich O V, Pekov I V, Steele I M, Massa W, Chukanov N V Crystallography Reports 54 (2009) 399-412 Alkali metals in beryl and their role in the formation of derivative structural motifs: Comparative crystal chemistry of vorobyevite and pezzottaite Locality: Lipovka pegmatite field, Rezh District, Central Urals, Urals Region, Russia Note: T = 100 K Note: variety vorobyevite Note: Coordinates of O1 and O2 corrected by Yakubivich _database_code_amcsd 0012414 9.2101 9.2101 9.2179 90 90 120 P6/mcc atom x y z occ Uiso Cs 0 0 .25 .079 .0322 Wat 0 0 .25 .19 .0322 Na1 0 0 0 .155 .014 Na2 .204 .159 .231 .010 .046 Na3 .095 .118 .201 .012 .046 Li .5 0 .25 .22 .0090 Be .5 0 .25 .78 .0090 Al 2/3 1/3 .25 .0082 Si .38846 .11726 0 .0083 O1 .49888 .14661 .14500 .0107 O2 .23580 -.07170 0 .0121