IMA mineral species
Voltaite
K₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂ * 18H₂O
Sulfate mineral.
Properties
⛏ Mohs hardness3
💅🪙🍶🔪💎
A copper coin scratches it.
| Chemical formula | K₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂ * 18H₂O |
|---|---|
| Elements | K, Fe, Al, S, O, H |
| Crystal system | Cubic |
| Mohs hardness | 3 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Vlt |
| Nickel–Strunz class | 7.CC.25 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Pozzuoli, Italy
- 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
- Voltaite on Mindat.org
- Wikidata item Q410665 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Cubic