Cristobalite II
Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
Physics and Chemistry of Minerals 38 (2011) 517-529
New insights into the high-pressure polymorphism of SiO2 cristobalite
Note: P = 3.5 GPa, data transformed from Dove et al (2000)
_database_code_amcsd 0018348
8.011 4.544 8.890 90 121.0 90 P2_1/c
atom     x     y     z Uiso
Si1  .6274 .2661 .8461 .018
Si2  .8660 .0221 .7189 .018
O1   .8152 .1255 .8517 .028
O2   .6944 .4046 .0275 .028
O3   .4637 .0262 .7952 .028
O4   .0696 .1948 .7604 .028