Pyroxene
Hazen R M, Finger L W, Ko J
American Mineralogist 78 (1993) 1336-1339
Effects of pressure on Mg-Fe ordering in orthopyroxene synthesized at 11.3 GPa
and 1600 C
_database_code_amcsd 0001628
18.312 8.917 5.217 90 90 90 Pbca
atom      x      y       z occ B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Mg1  .37566 .65433  .87255 .72 .00050 .00198 .00461  .00003 -.00015  .00002
Fe1  .37566 .65433  .87255 .28 .00050 .00198 .00461  .00003 -.00015  .00002
Fe2  .37783 .48396  .36615 .60 .00062 .00259 .00508 -.00013 -.00045  .00002
Mg2  .37783 .48396  .36615 .40 .00062 .00259 .00508 -.00013 -.00045  .00002
SiA  .27171 .34044  .05148     .00041 .00189 .00439 -.00010  .00002  .00011
SiB  .47378 .33632  .79433     .00041 .00177 .00412  .00004 -.00002  .00010
O1A  .18380 .33869  .04139     .00041 .00292 .00597 -.00001  .00006  .00015
O2A  .31110 .49979  .05281     .00070 .00251 .00590 -.00018  .00012  .00035
O3A  .30263 .23023 -.17567     .00050 .00370 .00548 -.00004 -.00002 -.00176
O1B  .56223 .33733  .79453     .00041 .00294 .00647 -.00007 -.00002  .00061
O2B  .43342 .48406  .69513     .00058 .00278 .00693  .00008 -.00015  .00103
O3B  .44736 .20115  .59377     .00053 .00282 .00593 -.00001  .00009 -.00079