Dolomite Antao S M, Mulder W H, Hassan I, Crichton W A, Parise J B American Mineralogist 89 (2004) 1142-1147 Cation disorder in dolomite, CaMg(CO3)2, and its influence on the aragonite+magnesite - dolomite reaction boundary Sample: P = 3 GPa, T = 675 K _database_code_amcsd 0003600 4.7918 4.7918 15.8283 90 90 120 R-3 atom x y z occ Uiso Ca 0 0 0 .991 .0442 Mg 0 0 0 .009 .0442 Mg 0 0 .5 .991 .0442 Ca 0 0 .5 .009 .0442 C 0 0 .2308 .028 O .2505 -.0453 .2437 .0217