Ankerite
Ross N L, Reeder R J
American Mineralogist 77 (1992) 412-421
High-pressure structural study of dolomite and ankerite
P = 2.97 GPa
_database_code_amcsd 0001451
4.8070 4.8070 15.881 90 90 120 R-3
atom     x      y     z  occ Biso
CaA      0      0     0 .997 0.96
MgB      0      0    .5 .273 0.83
FeB      0      0    .5 .676 0.83
MnB      0      0    .5 .054 0.83
C        0      0 .2444      0.84
O    .2523 -.0291 .2452      1.03