Beryl
Aurisicchio C, Fioravanti G, Grubessi O, Zanazzi P F
American Mineralogist 73 (1988) 826-837
Reappraisal of the crystal chemistry of beryl
Sample: 16
Locality: Fort Victoria field, Zimbabwe
_database_code_amcsd 0001181
9.2097 9.2097 9.1943 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)
Si1  .3876 .1158     0            .0012  .0011  .0001  .0006      0      0
Be      .5     0   .25 .995 .003
Li      .5     0   .25 .002 .003
Si2     .5     0   .25 .001 .003
Al1     .5     0   .25 .001 .003
Al2    2/3   1/3   .25 .988       .0039  .0039  .0025  .0019      0      0
Fe     2/3   1/3   .25 .012       .0039  .0039  .0025  .0019      0      0
O1   .3103 .2369     0            .0073  .0048  .0091  .0051      0      0
O2   .4989 .1456 .1452            .0050  .0031  .0033  .0023 -.0021 -.0006
Na       0     0   .25 .026       .0776  .0776  .0362  .0388      0      0