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 = 925 K _database_code_amcsd 0003602 4.7925 4.7925 15.9312 90 90 120 R-3 atom x y z occ Uiso Ca 0 0 0 .971 .0579 Mg 0 0 0 .029 .0579 Mg 0 0 .5 .971 .0579 Ca 0 0 .5 .029 .0579 C 0 0 .2311 .023 O .2493 -.0472 .2438 .0377