B4 U Blum P, Bertaut F Acta Crystallographica 7 (1954) 81-86 Contribution a l'Etude des Borures a Teneur Elevee en Bore _cod_database_code 1008113 _database_code_amcsd 0016055 7.08 7.08 3.978 90 90 90 P4/mbm atom x y z U1 .31 .81 0 B1 0 0 .213 B2 -.086 .414 .5 B3 .174 .042 .5