Dolomite Ross N L, Reeder R J American Mineralogist 77 (1992) 412-421 High-pressure structural study of dolomite and ankerite P = 1.50 GPa _database_code_amcsd 0001454 4.7910 4.7910 15.856 90 90 120 R-3 atom x y z Biso CaA 0 0 0 0.79 MgB 0 0 .5 0.46 C 0 0 .2434 0.87 O .2485 -.0355 .2443 0.93