Wulfenite Properties

Wulfenite is a lead molybdate mineral with the formula PbMoO4. It can be most often found as thin tabular crystals with a bright orange-red to yellow-orange color, sometimes brown, although the color can be highly variable.

Wulfenite has the following physical and chemical properties:

Color: Bright orange-red to yellow-orange, sometimes brown
Crystal System: Tetragonal
Crystal Habits: Tabular and prismatic crystals, often with beveled edges; also as granular and scaly masses
Cleavage: Imperfect on {110}
Fracture: Conchoidal
Hardness: 2.5-3.5 on Mohs scale
Luster: Adamantine to resinous
Streak: Yellow
Specific Gravity: 6.5
Transparency: Transparent to translucent
Optical Properties: Uniaxial (-), may be anomalously biaxial due to strain