Phenakite
Downs J W, Gibbs G V
American Mineralogist 72 (1987) 769-777
An exploratory examination of the electron density and electrostatic potential
of phenakite
_database_code_amcsd 0001110
12.472 12.472 8.251 90 90 120 R-3
atom      x      y      z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Si   .19562 .98402 .74990  .0035  .0030 .00300 .00141 .00005 .00014
Be1   .1943  .9841  .4156  .0052  .0055  .0048  .0026 -.0005  .0003
Be2   .1941  .9822  .0846  .0045  .0056  .0053  .0023 -.0001 -.0000
O1   .20975 .12125  .7503  .0075  .0042  .0036  .0037  .0000 -.0003
O2   .33382 .00040 .74991  .0027  .0044  .0059  .0017 -.0002 -.0003
O3   .12223 .91217 .91497  .0043  .0047  .0035  .0014  .0003  .0001
O4   .12228 .91342 .58495  .0040  .0047  .0035  .0010 -.0002 -.0003