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 = 1320 K _database_code_amcsd 0003614 4.8055 4.8055 16.1791 90 90 120 R-3 atom x y z occ Uiso Ca 0 0 0 .872 .1317 Mg 0 0 0 .128 .1317 Mg 0 0 .5 .872 .1317 Ca 0 0 .5 .128 .1317 C 0 0 .2509 .071 O .2408 -.0407 .2408 .1114