IMA mineral species
Françoisite-(Ce)
Ce(UO₂)₃O(OH)(PO₄)₂·6H₂O
Uranyl phosphate mineral.
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Properties
⛏ Mohs hardness3
💅🪙🍶🔪💎
A copper coin scratches it.
⚖ Density4.62 g/cm³
Very heavy
| Chemical formula | Ce(UO₂)₃O(OH)(PO₄)₂·6H₂O |
|---|---|
| Elements | Ce, U, O, H, P |
| Crystal system | — |
| Mohs hardness | 3 |
| Density | 4.62 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Frç-Ce |
| Nickel–Strunz class | 8.EC.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3: 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): Mount Painter, Australia · La Creusaz uranium prospect, Switzerland
- 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
- Françoisite-(Ce) on Mindat.org
- Wikidata item Q19833699 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Soft, Scratches Easily