Donpeacorite
Stimpfl M
American Mineralogist 90 (2005) 155-161
The Mn, Mg-intracrystalline exchange reaction in donpeacorite (Mn0.54Ca0.03Mg1.43Si2O6)
and its relation to the fractionation behavior of Mn in Fe, Mg-orthopyroxene
Sample: quenched from 856 deg C ORD
_database_code_amcsd 0003671
18.3645 8.8810 5.2284 90 90 90 Pbca
atom      x      y      z   occ  Biso
Mg1  .37537 .65390 .87221 .9419 .4741
Mn1  .37537 .65390 .87221 .0566 .4741
Ti1  .37537 .65390 .87221 .0015 .4741
Mg2  .37747 .48048 .36825 .4906 .7159
Mn2  .37747 .48048 .36825 .4849 .7159
Ca2  .37747 .48048 .36825 .0245 .7159
SiA  .27113 .34110 .04828       .3798
SiB  .47480 .33782 .79504 .9969 .3843
AlB  .47480 .33782 .79504 .0031 .3843
O1A  .18336 .33845 .04042       .4474
O2A  .30983 .50166 .04622        .596
O3A  .30223 .22917 .82235       .6328
O1B  .56299 .33903 .79668       .5212
O2B  .43495 .48674 .70045       .7196
O3B  .44769 .20372 .59169       .6291