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 900 deg C DIS
_database_code_amcsd 0003669
18.3686 8.8828 5.2287 90 90 90 Pbca
atom      x      y      z   occ  Biso
Mg1  .37542 .65387 .87215 .9362 .5294
Mn1  .37542 .65387 .87215 .0623 .5294
Ti1  .37542 .65387 .87215 .0015 .5294
Mg2  .37743 .48061 .36829 .4963 .7595
Mn2  .37743 .48061 .36829 .4792 .7595
Ca2  .37743 .48061 .36829 .0245 .7595
SiA  .27114 .34111 .04843       .4242
SiB  .47481 .33777 .79492 .9969 .4258
AlB  .47481 .33777 .79492 .0031 .4258
O1A  .18342 .33867 .04050       .4475
O2A  .30982 .50160 .04651       .6283
O3A  .30228 .22905 .82286       .6873
O1B  .56293 .33911 .79670       .5532
O2B  .43493 .48675 .70004       .7622
O3B  .44773 .20355 .59141       .7044