Pauloabibite Kumada N, Kinomura N, Muto F Journal of the Ceramic Society of Japan 98 (1990) 384-388 Crystal structures of ilmenite type LiNbO3 and NaNbO3 Locality: synthetic _database_code_amcsd 0019589 5.335 5.335 15.611 90 90 120 R-3 atom x y z Biso Na 0 0 .357 0.8 Nb 0 0 .1494 0.3 O .306 .048 .239 0.3