Properties
⛏ Mohs hardness2.5
💅🪙🍶🔪💎
Scratches with a fingernail.
⚖ Density3.011 g/cm³
Average
🔷 Monoclinic✏️ streak bright green
| Chemical formula | K₂Cu₃(SO₄)₃O |
|---|---|
| Elements | K, Cu, S, O |
| Crystal system | Monoclinic |
| Mohs hardness | 2.5 |
| Density | 3.011 g/cm³ |
| Streak | bright green |
| Color | green |
| IMA symbol | Fdt |
| Nickel–Strunz class | 7.BC.30 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 2.5: 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 Fissure eruption, Russia
Learn more
- Fedotovite on Mindat.org
- Wikidata item Q3742002 (source of this page's data – you can correct it there)
IMA mineral species
2–3
Monoclinic
Green
Soft, Scratches Easily