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 = 296 K _database_code_amcsd 0003598 4.8072 4.8072 16.0048 90 90 120 R-3 atom x y z Uiso Ca 0 0 0 .0378 Mg 0 0 .5 .0378 C 0 0 .2422 .038 O .2470 -.0380 .2430 .0483