Beryl
Artioli G, Rinaldi R, Stahl K, Zanazzi P F
American Mineralogist 78 (1993) 762-768
Structure refinements of beryl by single-crystal neutron and X-ray diffraction
Sample no. 1, morganite, probed with X-rays, T = 295 K
_database_code_amcsd 0001604
9.208 9.208 9.197 90 90 120 P6/mcc
atom     x     y     z  occ Biso
Si   .3880 .1165     0      0.32
Be      .5     0   .25 .894 0.60
Li      .5     0   .25 .106 0.60
Al     2/3   1/3   .25      0.35
O1   .3092 .2364     0      0.87
O2   .4988 .1459 .1454      0.62
Wat      0     0     0  .16  4.9
Cs       0     0   .25 .096  7.8