Dolomite Ross N L, Reeder R J American Mineralogist 77 (1992) 412-421 High-pressure structural study of dolomite and ankerite P = 3.70 GPa _database_code_amcsd 0001456 4.7703 4.7703 15.653 90 90 120 R-3 atom x y z Biso CaA 0 0 0 0.84 MgB 0 0 .5 0.42 C 0 0 .2416 0.47 O .2496 -.0359 .2443 0.79