Properties
⛏ Mohs hardness3 – 4
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
⚖ Density6 – 7 g/cm³
Very heavy
🔷 Monoclinic✏️ streak black
| Chemical formula | CuO |
|---|---|
| Elements | Cu, O |
| Crystal system | Monoclinic |
| Mohs hardness | 3 – 4 |
| Density | 6 – 7 g/cm³ |
| Streak | black |
| Color | — |
| IMA symbol | Tnr |
| Nickel–Strunz class | 4.AB.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3 – 4: 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): Mount Vesuvius, 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
- Tenorite on Mindat.org
- Wikipedia article
- Wikidata item Q163577 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Monoclinic
BlackGray
Soft, Scratches Easily