Zinkenite - Pb₉Sb₂₂S₄₂

Habit: Crystals thin prismatic, and striated, crystals seldom distinct. Columnar to radial fibrous aggregates, massive. Steel-gray. Opaque, Metallic Luster.

Environment: Associated with base metal and tin sulfides and sulfosalts in Hydrothermal veins.

Etymology: For J.K.L. Zincken (1798-1862), German mineralogist and mining geologist.