Bernardite

As₅S₈Tl

Pasava, J.Pertlik, F.Stumpfl, E. F.Zemann, J.

Mineralogical Magazine (1989) 53, 531-538

a=15.647Å   b=8.038Å   c=10.750Å

α=90°   β=91.27°   γ=90°