Ankerite
Reeder R J, Dollase W A
American Mineralogist 74 (1989) 1159-1167
Structural variation in the dolomite-ankerite solid-solution series: An X-ray,
Mossbauer, and TEM study
sample AMNH 8059
_database_code_amcsd 0001274
4.8312 4.8312 16.1663 90 90 120 R-3
atom      x       y      z  occ B(1,1) B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
CaA       0       0      0 .978 .01095 .01095 .000663 .005475       0       0
FeA       0       0      0 .022 .01095 .01095 .000663 .005475       0       0
MgB       0       0     .5 .273 .00804 .00804 .000633  .00402       0       0
FeB       0       0     .5 .708 .00804 .00804 .000633  .00402       0       0
CaB       0       0     .5 .019 .00804 .00804 .000633  .00402       0       0
C         0       0 .24395      0.0098 0.0098 0.00070   .0049       0       0
O    .25045 -.02842 .24496      0.0114 0.0161 0.00122   .0089 -.00076 -.00106