Potassium Liu L Journal of Physics and Chemistry of Solids 47 (1986) 1067-1072 Compression and polymorphism of potassium to 400 Kbar Locality: synthetic Sample: fcc at P = 16.5 GPa _database_code_amcsd 0013233 4.963 4.963 4.963 90 90 90 Fm3m atom x y z K 0 0 0