Cristobalite
Dove M T, Craig M S, Keen D A, Marshall W G, Redfern S A T, Trachenko K O, Tucker M G
Mineralogical Magazine 64 (2000) 569-576
Crystal structure of the high-pressure monoclinic phase-II of cristobalite, SiO2
Locality: synthetic
Note: P = 3.5 GPa, refinement by unconstrained Rietveld analysis
_database_code_amcsd 0014541
8.3780 4.6018 9.0568 90 124.949 90 P2_1/c
atom     x     y     z   Uiso
Si1  .3726 .7339 .2187 -.0018
Si2  .1340 .9779 .8529 -.0018
O1   .1848 .8745 .0365  .0028
O2   .3056 .5954 .3331  .0028
O3   .5363 .9738 .3315  .0028
O4   .9304 .8052 .6908  .0028