Assertion: gamma neptunium | /r/HasProperty | 600 deg
Facets:
Source sentences:
text: 20.25 g/cu cmm3, beta-neptunium (above 280 deg C), tetragonal, density (313 deg C) 19.36 g/cu cm; gamma-neptunium (above 577 deg C), cubic, density (600 deg C) 18.0 g/cu cm.