Fontanite
A variety of Minerals
What is Fontanite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Fontanite 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
- Bright yellow
- Hardness (Mohs)
- 3
- Rock tumbling
- Not recommended
- Density
- 4.19 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca(UO2)3(CO3)4 · 3H2O
- Elements
- C, Ca, H, O, U
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Fontanite FAQs
How do I identify Fontanite?
Fontanite can be identified by its hardness of 3 on the Mohs scale, Bright yellow color. Look for these key characteristics when examining specimens.
What color is Fontanite?
Fontanite typically appears in Bright yellow. Color can vary depending on impurities and formation conditions.
How hard is Fontanite?
Fontanite has a hardness of 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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