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 6376
_database_code_amcsd 0001273
4.8240 4.8240 16.1217 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 .998 0.0105 0.0105 .00067 .00525       0       0
FeA      0      0      0 .002 0.0105 0.0105 .00067 .00525       0       0
MgB      0      0     .5 .451 0.0078 0.0078 .00062  .0039       0       0
FeB      0      0     .5 .540 0.0078 0.0078 .00062  .0039       0       0
CaB      0      0     .5 .009 0.0078 0.0078 .00062  .0039       0       0
C        0      0 .24360      0.0099 0.0099 .00070 .00495       0       0
O    .2498 -.0300 .24471      0.0098 0.0159 .00123 0.0073 -.00024 -.00101