Galkhaite - (Cs,Tl)(Hg,Cu,Zn)₆(As,Sb)₄S₁₂

Habit: Dark red-orange cubic crystals, also massive. Opaque, vitreous to Adamantine Luster.

Environment: Hydrothermal Hg-Au deposits

Etymology: Named for Gal-Khaya, Yakutia, Russia, the locality it was first described from.