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 980 deg C DIS
_database_code_amcsd 0003668
18.3653 8.8819 5.2305 90 90 90 Pbca
atom      x      y      z   occ  Biso
Mg1  .37541 .65383 .87209 .9300 .4555
Mn1  .37541 .65383 .87209 .0685 .4555
Ti1  .37541 .65383 .87209 .0015 .4555
Mg2  .37744 .48056 .36819 .5025 .6798
Mn2  .37744 .48056 .36819 .4730 .6798
Ca2  .37744 .48056 .36819 .0245 .6798
SiA  .27114 .34110 .04843       .3508
SiB  .47477 .33774 .79486 .9969 .3591
AlB  .47477 .33774 .79486 .0031 .3591
O1A  .18343 .33862 .04032       .4475
O2A  .30988 .50158 .04639       .5699
O3A  .30235 .22899 .82249       .6058
O1B  .56286 .33919 .79654       .5044
O2B  .43490 .48658 .69994       .6916
O3B  .44776 .20331 .59138       .5936