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
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