Neptunium-beta
Wyckoff R W G
Crystal Structures 1 (1963) 7-83
Second edition. Interscience Publishers, New York, New York
Sample is stable between 551 K and 843 K
Note: T = 586 K
_database_code_amcsd 0011264
4.897 4.897 3.388 90 90 90 P42_12
atom x  y     z
Np1  0  0     0
Np2  0 .5 -.375