mineral

Vanadinite cluster

Vanadinite, Pb5(VO4)3Cl

AI-generated identification · may be incorrect

Bright orange-red to brown, resinous-to-adamantine luster; typically hexagonal barrel-shaped crystals with excellent crystal faces. Mohs hardness 2.5–3, brittle, dense (specific gravity about 6.8–7.1), with poor cleavage; commonly associated with dark gray matrix and sometimes mimics wulfenite.

Identified August 23, 2026More mineral →

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Physical properties

Formation & geological history

A secondary lead vanadate mineral formed by oxidation of lead-ore deposits, commonly replacing galena in arid environments. Important specimens formed relatively recently on geologic timescales, especially in Morocco, Arizona, and Mexico.

Uses & applications

Primarily a collector mineral; its lead and vanadium content has historical industrial significance, but specimens are not practical ore sources. Handle carefully because it is toxic if dust is inhaled or material is ingested.

Geological facts

The image shows characteristic vivid red-orange, blocky to barrel-like crystals on a dark matrix, strongly supporting vanadinite. It commonly fluoresces weakly under some ultraviolet light, though response varies.

Field identification & locations

Identify by color, exceptional heaviness, hexagonal crystals, and association with oxidized lead deposits; avoid scratching, grinding, or washing with bare hands. Major localities include Mibladen, Morocco; Arizona, USA; and Chihuahua, Mexico.