Beryl
Brown G E, Mills B A
American Mineralogist 71 (1986) 547-556
High-temperature structure and crystal chemistry of hydrous alkali-rich beryl
from the Harding pegmatite, Taos County, New Mexico
Sample: T = 24 deg C, before heating
O2x has been corrected
_database_code_amcsd 0001011
9.236 9.236 9.246 90 90 120 P6/mcc
atom      x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Be2      .5     0   .25 .86  .0033  .0025  .0031 .00125      0      0
Li2      .5     0   .25 .13  .0033  .0025  .0031 .00125      0      0
Al2      .5     0   .25 .01  .0033  .0025  .0031 .00125      0      0
Al      2/3   1/3   .25      .0015  .0015  .0012 .00075      0      0
Si1   .3893 .1189     0 .98  .0011  .0014  .0013  .0007      0      0
Al1   .3893 .1189     0 .02  .0011  .0014  .0013  .0007      0      0
O1    .3057  .235     0      .0039  .0031  .0047  .0027      0      0
O2    .4985 .1468 .1445      .0034  .0041  .0025  .0024 -.0018 -.0012
WatC1     0     0   .25 .55  .0068  .0068  .0043  .0034      0      0
CsC1      0     0   .25 .09  .0068  .0068  .0043  .0034      0      0
KC1       0     0   .25 .05  .0068  .0068  .0043  .0034      0      0
NaC2      0     0     0 .21  .0005  .0005  .0096 .00025      0      0
CaC2      0     0     0 .02  .0005  .0005  .0096 .00025      0      0
MgC2      0     0     0 .02  .0005  .0005  .0096 .00025      0      0
FeC2      0     0     0 .01  .0005  .0005  .0096 .00025      0      0