Transparency crystals are transparent to translucent. Crystal Habit is typically the hexagonal prism with pinacoid as a termination. Rare crystals can have the hexagonal pyramid as a termination. Can also be found as rounded masses and crusts. Cleavage is none.
Fracture is conchoidal.
Hardness is 3. Streak is yellowish white. Associated Minerals are wulfenite , limonite , barite , galena and secondary lead deposit minerals. Best Field Indicators are color, crystal habit, high luster and density.