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 = 36 kbar
_database_code_amcsd 0001042
9.153 9.153 9.119 90 90 120 P6/mcc
atom     x     y     z Biso
Be      .5     0   .25   .4
Al     1/3   2/3   .25  1.1
Si   .3883 .1161     0  .87
O1   .3111 .2371     0 1.06
O2   .4984 .1450 .1447  .98