Clinoenstatite
Angel R J, Gasparik T, Finger L W
American Mineralogist 74 (1989) 599-603
Crystal structure of a Cr-bearing pyroxene
Sample: Mg1.4Cr.6Si2O6
Locality: synthetic
_database_code_amcsd 0001244
9.713 8.910 5.238 90 109.41 90 P2_1/c
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Mg1  .2506 .6537 .2253 .946 0.0019 0.0021 0.0034  .0001  .0004  .0008
Cr1  .2506 .6537 .2253 .054 0.0019 0.0021 0.0034  .0001  .0004  .0008
Mg2  .2528 .0162 .2209 .479 0.0019 0.0019 0.0044  .0005  .0003  .0002
Cr2  .2528 .0162 .2209 .521 0.0019 0.0019 0.0044  .0005  .0003  .0002
SiA  .0456 .3387 .2891 .983 0.0020 0.0020 0.0040 -.0003  .0011  .0001
CrA  .0456 .3387 .2891 .017 0.0020 0.0020 0.0040 -.0003  .0011  .0001
SiB  .5493 .8381 .2437 .981 0.0012 0.0017 0.0043  .0002  .0002  .0002
CrB  .5493 .8381 .2437 .019 0.0012 0.0017 0.0043  .0002  .0002  .0002
O1A  .8694 .3347 .1748      0.0020 0.0030  0.005  .0008  .0004   .001
O2A  .1226 .4984 .3269      0.0024 0.0011  0.006 -.0007  .0016  -.001
O3A  .1092 .2753 .6055      0.0021 0.0020  0.002 -.0007 -.0002  .0012
O1B  .3726 .8399 .1336      0.0009 0.0023  0.003 -.0006  .0000   .000
O2B  .6321 .9871 .3820      0.0034 0.0017  0.008 -.0010  .0034  -.001
O3B  .6021 .7066 .4834      0.0013 0.0025  0.003  .0000 -.0015  .0013