Lu3S4
Kim, S.-J.Anderegg, J.W.Franzen, H.F.
Journal of the Less-Common Metals (1990) 157, 133-138
a=5.3797Å b=5.3797Å c=5.3797Å
α=90° β=90° γ=90°
Lu2S3
a=10.7735Å b=7.7053Å c=22.837Å