Vauquelinite
A variety of Minerals
What is Vauquelinite?
Vauquelinite is a complex mineral with the formula CuPb2(CrO4)(PO4)(OH) making it a combined chromate and phosphate of copper and lead. It forms a series with the arsenate mineral fornacite. It was first described in 1818 in the Beryozovskoye deposit, Urals, Russia, and named for Louis Vauquelin (1763–1829), a French chemist. It occurs in oxidized hydrothermal ore deposits and is associated with crocoite, pyromorphite, mimetite, cerussite, beudantite and duftite at the type locality in Russia.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Vauquelinite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Vauquelinite Localities Map
See where Vauquelinite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Olive-green, apple-green, brown to nearly black
- Hardness (Mohs)
- 2.5 - 3
- Density
- 6.16 g/cm³
- Streak
- Greenish or brownish
Chemical Properties
- Chemical Formula
- Pb2Cu(CrO4)(PO4)(OH)
- Elements
- Cr, Cu, H, O, P, Pb
Also Known As
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Vauquelinite FAQs
How do I identify Vauquelinite?
Vauquelinite can be identified by its hardness of 2.5 - 3 on the Mohs scale, Olive-green color. Look for these key characteristics when examining specimens.
What color is Vauquelinite?
Vauquelinite typically appears in Olive-green, apple-green, brown to nearly black. Color can vary depending on impurities and formation conditions.
How hard is Vauquelinite?
Vauquelinite has a hardness of 2.5 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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