Properties
| Chemical formula | PbGe₄O₉ |
|---|---|
| Elements | Pb, Ge, O |
| Crystal system | Triclinic |
| Mohs hardness | 3 |
| Density | 5.77 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Otj |
| Nickel–Strunz class | 9.JO.15 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3: 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
- Otjisumeite on Mindat.org
- Wikidata item Q3887119 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Triclinic
Soft, Scratches Easily