Beryl
Hazen R M, Au A Y, Finger L W
American Mineralogist 71 (1986) 977-984
High-pressure crystal chemistry of beryl (Be3Al2Si6O18) and euclase (BeAlSiO4OH)
Sample: Pressure = .001 kbar
_database_code_amcsd 0001040
9.208 9.208 9.188 90 90 120 P6/mcc
atom     x     y     z Biso
Be      .5     0   .25  .57
Al     1/3   2/3   .25  .51
Si   .3876 .1159     0  .44
O1   .3103 .2369     0  .82
O2   .4985 .1456 .1453  .68