Dolomite Graf D L American Mineralogist 46 (1961) 1283-1316 Crystallographic tables for the rhombohedral carbonates Locality: model _database_code_amcsd 0000108 4.8079 4.8079 16.010 90 90 120 R-3 atom x y z Ca 0 0 0 Mg 0 0 .5 C 0 0 .2435 O .2374 -.0347 .2440