Zeunerite
A variety of Autunite Group
What is Zeunerite?
Zeunerite is a green copper uranium arsenate mineral with formula Cu(UO2)2(AsO4)2•(10-16)H2O. It is a member of the autunite group. The associated mineral metazeunerite is a dehydration product of zeunerite. Zeunerite occurs as a secondary mineral in the oxidized weathering zone of hydrothermal uranium ore deposits which contain arsenic. Olivenite, mansfieldite, scorodite, azurite and malachite are found in association with zeunerite. It was first described in 1872 for an occurrence in the Schneeberg District, Erzgebirge, Saxony, Germany. It was named for Gustav Anton Zeuner (1828–1907).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Zeunerite 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.
Zeunerite Localities Map
See where Zeunerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Yellow-green, emerald-green
- Hardness (Mohs)
- 2.5
- Density
- 3.57 g/cm³
Chemical Properties
- Chemical Formula
- Cu(UO2)2(AsO4)2 · 12H2O Water content was previously thought to range between 10 and 16 H2O.
- Elements
- As, Cu, H, O, U
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Zeunerite FAQs
How do I identify Zeunerite?
Zeunerite can be identified by its hardness of 2.5 on the Mohs scale, Yellow-green color. Look for these key characteristics when examining specimens.
What color is Zeunerite?
Zeunerite typically appears in Yellow-green, emerald-green. Color can vary depending on impurities and formation conditions.
How hard is Zeunerite?
Zeunerite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
