Beryl
Aurisicchio C, Fioravanti G, Grubessi O, Zanazzi P F
American Mineralogist 73 (1988) 826-837
Reappraisal of the crystal chemistry of beryl
Sample: 26
Locality: Ural Mountains, Russia
_database_code_amcsd 0001180
9.2176 9.2176 9.1968 90 90 120 P6/mcc
atom     x     y     z  occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Si   .3877 .1161     0            .0046  .0040  .0028  .0024      0      0
Be      .5     0   .25 .993 .005
Li      .5     0   .25 .006 .005
Al1     .5     0   .25 .001 .005
Al2    2/3   1/3   .25 .961       .0044  .0044  .0035  .0022      0      0
Fe     2/3   1/3   .25 .009       .0044  .0044  .0035  .0022      0      0
Mg     2/3   1/3   .25  .03       .0044  .0044  .0035  .0022      0      0
O1   .3083 .2349     0            .0117  .0086  .0130  .0081      0      0
O2   .4983 .1451 .1448            .0082  .0073  .0059  .0042 -.0028 -.0007
Na       0     0   .25 .091       .0500  .0500  .0495  .0250      0      0