Nd3S4
Provenzano, P.L.White, W.B.
Materials Letters (1986) 5, 1-4
a=8.525Å b=8.525Å c=8.525Å
α=90° β=90° γ=90°
Nd5S8Sr
a=8.592Å b=8.592Å c=8.592Å