Tyuyamunite
A variety of Minerals
What is Tyuyamunite?
Tyuyamunite (pronounced tuh-YOO-ya-moon-ite) is a very rare uranium mineral with formula Ca(UO2)2V2O8·(5-8)H2O. It is a member of the carnotite group. It is a bright, canary-yellow color because of its high uranium content. Also, because of tyuyamunite's high uranium content, it is radioactive. It was named by Konstantin Avtonomovich Nenadkevich, in 1912, after its type locality, Tyuya-Muyun, Fergana Valley, Kyrgyzstan.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tyuyamunite 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.
Tyuyamunite Localities Map
See where Tyuyamunite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Canary yellow, lemon-yellow; greenish yellow (upon exposure to sunlight); colourless to pale yellow in transmitted light.
- Hardness (Mohs)
- 1.5 - 2
- Density
- 3.59 g/cm³
Chemical Properties
- Chemical Formula
- Ca(UO2)2(VO4)2 · 5-8H2O
- Elements
- Ca, H, O, U, V
Also Known As
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Tyuyamunite FAQs
How do I identify Tyuyamunite?
Tyuyamunite can be identified by its hardness of 1.5 - 2 on the Mohs scale, Canary yellow color. Look for these key characteristics when examining specimens.
What color is Tyuyamunite?
Tyuyamunite typically appears in Canary yellow, lemon-yellow; greenish yellow (upon exposure to sunlight); colourless to pale yellow in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Tyuyamunite?
Tyuyamunite has a hardness of 1.5 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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