Donpeacorite
Petersen E U, Anovitz L M, Essene E J
American Mineralogist 69 (1984) 472-480
Donpeacorite, (Mn,Mg)MgSi2O6, a new orthopyroxene and its proposed phase
relations in the system MnSiO3-MgSiO3-FeSiO3
_database_code_amcsd 0000937
18.384 8.878 5.226 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  .3751 .6543 .8721     .00051 0.0025 0.0055 0.00001 -.00010 -.0003
Mg2  .3776 .4801 .3684 .47 .00066 0.0034 0.0063 -.00011 -.00015 -.0003
Mn2  .3776 .4801 .3684 .53 .00066 0.0034 0.0063 -.00011 -.00015 -.0003
SiA  .2712 .3413 .0484     .00056 0.0022 0.0052 -.00007 -.00016 0.0003
SiB  .4749 .3382 .7949     .00045 0.0022 0.0060 -.00010 -.00013 0.0002
O1A  .1833 .3379 .0407     .00068 0.0030 0.0061 0.00003 0.00020 -.0008
O2A  .3099 .5022 .0467     .00048 0.0028 0.0087 0.00010 0.00010 -.0001
O3A  .3017 .2292 .8222     .00072 0.0041 0.0071 0.00004 -.00040 -.0003
O1B  .5632 .3402 .7981     .00058 0.0036 0.0041 0.00005 -.00020 0.0003
O2B  .4349 .4872 .7028     .00080 0.0033 0.0119 0.00020 0.00010 0.0015
O2B  .4475 .2050 .5902     .00064 0.0043 0.0082 -.00020 -.00007 -.0021