Properties
| Chemical formula | Ni₃Si₄O₁₀(OH)₂ |
|---|---|
| Elements | Ni, Si, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 2 |
| Density | 3.31 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Wls |
| Nickel–Strunz class | 9.EC.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 2: 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): Bon Accord nickel deposit, South Africa
- 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
- Willemseite on Mindat.org
- Wikidata item Q1170510 (source of this page's data – you can correct it there)
IMA mineral species
2–3
Monoclinic
Soft, Scratches Easily