Dolomite
Steinfink H, Sans F J
American Mineralogist 44 (1959) 679-682
Refinement of the crystal structure of dolomite
_database_code_amcsd 0000086
4.815 4.815 16.119 90 90 120 R-3
atom     x      y     z Biso
Ca       0      0     0  .37
Mg       0      0    .5  .20
C        0      0 .2435  .62
O    .2374 -.0347 .2440  .59