IMA mineral species
Calciouranoite
(Ca,Ba,Pb,K,Na)U₂O₇·5H₂O
Hydrous uranium oxide mineral.
Properties
⛏ Mohs hardness4
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
| Chemical formula | (Ca,Ba,Pb,K,Na)U₂O₇·5H₂O |
|---|---|
| Elements | Ca, Ba, Pb, K, Na, U, O, H |
| Crystal system | Triclinic |
| Mohs hardness | 4 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Cun |
| Nickel–Strunz class | 4.GB.20 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 4: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
Learn more
- Calciouranoite on Mindat.org
- Wikidata item Q576327 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Triclinic
Soft, Scratches Easily