Properties
⛏ Mohs hardness4.5
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
⚖ Density4.364 g/cm³
Heavy
| Chemical formula | ZnFe³⁺₂(AsO₄)₂(OH)₂ |
|---|---|
| Elements | Zn, Fe, As, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 4.5 |
| Density | 4.364 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Wkl |
| Nickel–Strunz class | 8.BB.40 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 4.5: 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): Tsumeb Mine, Namibia
- 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
- Wilhelmkleinite on Mindat.org
- Wikidata item Q4019842 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Monoclinic
Soft, Scratches Easily