IMA mineral species
Cuprosklodowskite
Cu(UO₂)₂(SiO₃OH)₂·6H₂O
Uranyl nesosilicate.
Properties
⛏ Mohs hardness4
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
| Chemical formula | Cu(UO₂)₂(SiO₃OH)₂·6H₂O |
|---|---|
| Elements | Cu, U, O, Si, H |
| Crystal system | Triclinic |
| Mohs hardness | 4 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Cskl |
| Nickel–Strunz class | 9.AK.10 |
“—” 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.
🌍 Where it's found
Type locality (where it was first described): Great Bear Lake, Canada
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
- Cuprosklodowskite on Mindat.org
- Wikipedia article
- Wikidata item Q2479128 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Triclinic
YellowGreen
Soft, Scratches Easily