Otavite Graf D L American Mineralogist 46 (1961) 1283-1316 Crystallographic tables for the rhombohedral carbonates Locality: synthetic _database_code_amcsd 0000103 4.9204 4.9204 16.298 90 90 120 R-3c atom x y z Cd 0 0 0 C 0 0 .25 O .2614 0 .25