Virgilite
Muller G, Paulus H, Stiefel J
Neues Jahrbuch fur Mineralogie, Monatshefte 1990 (1990) 493-503
Synthesis and structure of beta-quartz type
Na0.5H0.5AlSi206 as compared to LiAlSi206
Locality: synthetic
Note: stuffed beta-quartz type structure
_database_code_amcsd 0014849
5.226 5.226 5.465 90 90 120 P6_222
atom     x     y  z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Li       0     0  0 1/3 2.61   .012   .021   .070   .011      0      0
Al      .5     0  0 1/3  .87  .0110  .0098  .0117  .0049      0      0
Si      .5     0  0 2/3  .87  .0110  .0098  .0117  .0049      0      0
O    .2030 .4060 .5     2.32  .0270  .0279  .0338  .0140  .0130      0