IMA mineral species
Creedite
Ca₃Al₂(SO₄)(OH)₂F₈·2H₂O
Halide mineral.
Properties
⛏ Mohs hardness4
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
🔷 Monoclinic✏️ streak white
| Chemical formula | Ca₃Al₂(SO₄)(OH)₂F₈·2H₂O |
|---|---|
| Elements | Ca, Al, S, O, H, F |
| Crystal system | Monoclinic |
| Mohs hardness | 4 |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Cee |
| Nickel–Strunz class | 3.CG.15 |
“—” 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
- Creedite on Mindat.org
- Wikipedia article
- Wikidata item Q382754 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Monoclinic
OrangePurpleWhite & Clear
Soft, Scratches Easily