mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: bright red, orange-red, or brownish-red; Luster: Adamantine to resinous; Crystal structure: Hexagonal (tabular/prismatic); Cleavage: None; Specific gravity: 6.8 - 7.1 (very heavy).
- Hardness
- 3 on Mohs scale
- Color
- bright red, orange-red, or brownish-red
- Luster
- Adamantine to resinous
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Physical properties
Hardness: 3 on Mohs scale; Color: bright red, orange-red, or brownish-red; Luster: Adamantine to resinous; Crystal structure: Hexagonal (tabular/prismatic); Cleavage: None; Specific gravity: 6.8 - 7.1 (very heavy).
Formation & geological history
Formed as a secondary mineral in the oxidation zone of lead-bearing deposits. Lead is oxidized and reacts with vanadium-rich solutions commonly derived from the weathering of nearby volcanic rocks or sedimentary layers.
Uses & applications
Primary ore of vanadium, which is used to strengthen steel alloys. It is also highly prized as a collector's mineral due to its vibrant color and distinct crystal morphology.
Geological facts
Vanadinite is a member of the apatite group. It is notable for its high density due to its lead content; a small specimen will feel surprisingly heavy in the hand compared to its size.
Field identification & locations
Identify in the field by its distinct hexagonal 'barley-sugar' or tabular crystals, high density, and vibrant red/orange color. Common locations include Morocco (Mibladen), Arizona (US), and Namibia.
