AM_Helium_4 Formula: He Name: Helium Unit cell: 4.242 4.242 4.242 90.0 90.0 90.0 , V=76.33 Space group: FM3M (225)

Schuch A F , Mills R L , Physical Review Letters , 6 (1961) p.596-597, New allotropic form of He3, Locality: synthetic, Sample: at T = 18.76 K & P = .171 GPa