Enstatite
Yang H, Ghose S
Physics and Chemistry of Minerals 22 (1995) 300-310
High temperature single crystal X-ray diffraction studies
of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K
Sample: T = 1200 K
_database_code_amcsd 0007921
18.413 8.929 5.246 90 90 90 Pbca
atom     x     y      z  Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Mg1  .3753 .6514  .8780 1.758  .0014  .0061  .0129  .0000 -.0006  .0001
Mg2  .3762 .4876  .3725 2.518  .0022  .0080  .0183 -.0005 -.0022  .0018
SiA  .2720 .3403  .0590 1.226  .0009  .0043  .0097 -.0003  .0000 -.0003
SiB  .4749 .3380  .7895 1.214  .0008  .0044  .0102  .0002 -.0003  .0002
O1A  .1844 .3396  .0484 1.734  .0011  .0065  .0144  .0001  .0000  .0004
O1B  .5629 .3420  .7915 1.702  .0010  .0069  .0145  .0001 -.0003  .0002
O2A  .3109 .4992  .0572 2.054  .0016  .0056  .0197 -.0011 -.0006  .0013
O2B  .4337 .4847  .6974  2.05  .0017  .0064  .0170  .0010 -.0003  .0024
O3A  .3025 .2273 -.1660 2.071  .0012  .0095  .0143  .0002 -.0003 -.0046
O3B  .4490 .2037  .5875 2.101  .0014  .0082  .0159 -.0003 -.0001 -.0043