Rock Identifier
Vanadinite (Vanadinite (Pb5(VO4)3Cl)) — mineral
mineral

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

Hardness: 3.0 - 4.0 Mohs; Color: Bright red, orange-red, reddish-brown; Luster: Adamantine to resinous; Crystal structure: Hexagonal (tabular or prismatic crystals); Cleavage: None; Specific gravity: 6.8 - 7.1

Hardness
3
Color
Bright red, orange-red, reddish-brown
Luster
Adamantine to resinous
Identified More mineral

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Physical properties

Hardness: 3.0 - 4.0 Mohs; Color: Bright red, orange-red, reddish-brown; Luster: Adamantine to resinous; Crystal structure: Hexagonal (tabular or prismatic crystals); Cleavage: None; Specific gravity: 6.8 - 7.1

Formation & geological history

Formed as a secondary mineral in the oxidized zone of lead-bearing hydrothermal deposits. It forms when lead-bearing minerals interact with vanadium-rich meteoric waters.

Uses & applications

A major industrial ore of vanadium; highly prized as a specimen for mineral collectors due to its vibrant color and crystal shape.

Geological facts

Vanadinite is chemically related to apatite and pyromorphite. It is exceptionally dense due to its high lead content, making specimens feel much heavier than they look.

Field identification & locations

Identify by its distinctive bright red hexagonal crystals and high density. Commonly found in Mibladen, Morocco; Arizona, USA; and Namibia. Collectors should look for undamaged crystal terminations.