Dolomite Althoff P L American Mineralogist 62 (1977) 772-783 Structural refinements of dolomite and a magnesian calcite and implications for dolomite formation in the marine environment _database_code_amcsd 0000584 4.8033 4.8033 15.984 90 90 120 R-3 atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca 0 0 0 0.0055 .0055 .00038 .00275 0 0 Mg 0 0 .5 0.0041 .0041 .00040 .00205 0 0 C 0 0 -.2423 0.0050 .0050 .00010 .00250 0 0 O .2829 .035 -.2440 0.0041 .0100 .00080 .00410 -.0003 -.0009