Beryl
Aurisicchio C, Fioravanti G, Grubessi O, Zanazzi P F
American Mineralogist 73 (1988) 826-837
Reappraisal of the crystal chemistry of beryl
Sample: 20
Locality: Salinas mine, Minas Gerais, Brazil
_database_code_amcsd 0001184
9.2097 9.2097 9.2337 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  .3893 .1190     0            .0045  .0045  .0044  .0024      0      0
Be      .5     0   .25 .832 .008
Li      .5     0   .25 .156 .008
Si2     .5     0   .25 .007 .008
Al1     .5     0   .25 .005 .008
Al2    2/3   1/3   .25            .0055  .0055  .0049  .0028      0      0
O1   .3054 .2351     0            .0128  .0092  .0208  .0083      0      0
O2   .4980 .1471 .1448            .0135  .0142  .0102  .0087 -.0061 -.0046
Na       0     0   .25 .261       .0229  .0229  .0195 .01145      0      0
Cs       0     0   .25  .15       .0229  .0229  .0195 .01145      0      0
Rb       0     0   .25 .001       .0229  .0229  .0195 .01145      0      0