Enstatite
Jacob D, Palatinus L, Cuvillier P, Leroux H, Domeneghetti C, Camara F
American Mineralogist 98 (2013) 1526-1534
Ordering state in orthopyroxene as determined by precession electron diffraction
Locality: Wilson Terrane, North Victoria Land, Antarctica
_database_code_amcsd 0020254
18.2810 8.8732 5.2070 90 90 90 Pbca
atom       x      y      z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
FeM1  .37558 .65444 .87128 .028 .00773  .0087  .0076  .0069  .00003 -.00068  .00035
MgM1  .37558 .65444 .87128 .972 .00773  .0087  .0076  .0069  .00003 -.00068  .00035
MgM2 .378022 .48350 .36510 .445 .01024 .01155 .01054 .00861 -.00112 -.00226  .00008
FeM2 .378022 .48350 .36510 .555 .01024 .01155 .01054 .00861 -.00112 -.00226  .00008
SiA   .27155 .34090 .05139      .00701 .00711 .00712 .00680 -.00052  .00019 -.00017
SiB   .47390 .33682 .79702      .00690 .00692 .00688  .0069  .00037 -.00037  .00016
O1A   .18346 .33834  .0416       .0084  .0071  .0093  .0088  -.0002   .0002  -.0004
O1B   .56252 .33758  .7984       .0084  .0073  .0089  .0090   .0004  -.0004  -.0001
O2A   .31115 .50120  .0503       .0099  .0104  .0094  .0099  -.0023  -.0011   .0006
O2B   .43370 .48491  .6947       .0104  .0115  .0102  .0095   .0023  -.0007   .0016
O3A   .30263 .22825 -.1734       .0110  .0099  .0136  .0095   .0005   .0002  -.0037
O3B   .44724 .19936  .5976       .0107  .0097  .0119  .0105  -.0011  -.0002  -.0031