Sklodowskite
A variety of Minerals
What is Sklodowskite?
Sklodowskite is a uranium mineral with the chemical formula: Mg(UO2)2(HSiO4)2·5H2O. It is a secondary mineral which contains magnesium and is a bright yellow colour, its crystal habit is acicular, but can form in other shapes. It has a Mohs hardness of about 2-3. It is named after the maiden name of Marie Skłodowska Curie. It is the magnesium analogue of the much more common uranium mineral Cuprosklodowskite, which contains copper instead. It was discovered by Alfred Schoep [de] (1881–1966) in 1924.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Sklodowskite 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.
Quick Facts
Physical Properties
- Color
- Light yellow to green-yellow
- Hardness (Mohs)
- 2 - 3
- Rock tumbling
- Not recommended
- Density
- 3.51 g/cm³
- Streak
- Yellow
Chemical Properties
- Chemical Formula
- Mg(UO2)2(SiO3OH)2 · 6H2O
- Elements
- H, Mg, O, Si, U
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Sklodowskite FAQs
How do I identify Sklodowskite?
Sklodowskite can be identified by its hardness of 2 - 3 on the Mohs scale, Light yellow to green-yellow color. Look for these key characteristics when examining specimens.
What color is Sklodowskite?
Sklodowskite typically appears in Light yellow to green-yellow. Color can vary depending on impurities and formation conditions.
How hard is Sklodowskite?
Sklodowskite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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