Alluaudite
Hatert F, Rebbouh L, Hermann R P, Fransolet A M, Long G J, Grandjean F
American Mineralogist 90 (2005) 653-662
Crystal chemistry of the hydrothermally synthesized
Na2(Mn1-xFe2+x)2Fe3+(PO4)3 alluaudite-type solid solution
Sample: Na2Mn0.5Fe2+1.5Fe3+(PO4)3 (x = 0.75)
_database_code_amcsd 0003757
11.894 12.536 6.471 90 114.49 90 C2/c
atom      x      y     z  occ Biso
NaA2'     0 -.0110   .25 .762  1.9
NaA1     .5      0     0       2.2
MnM1      0  .2687   .25 .442   .3
FeM1      0  .2687   .25   .5   .3
FeM2  .2803  .6576 .3655 .990  .89
P1        0 -.2845   .25       1.0
P2    .2375 -.1096 .1243       1.0
O1    .4575  .7129  .536       1.2
O2    .1034  .6419  .242       1.2
O3    .3347  .6671  .109       1.2
O4    .1278  .4012  .329       1.2
O5    .2270  .8261  .323       1.2
O6    .3215  .4996 .3829       1.2