Properties
⛏ Mohs hardness3
💅🪙🍶🔪💎
A copper coin scratches it.
⚖ Density6.701 g/cm³
Very heavy
🔷 Tetragonal✏️ streak black
| Chemical formula | Cu₃Se₂ |
|---|---|
| Elements | Cu, Se |
| Crystal system | Tetragonal |
| Mohs hardness | 3 |
| Density | 6.701 g/cm³ |
| Streak | black |
| Color | — |
| IMA symbol | Um |
| Nickel–Strunz class | 2.BA.25 |
“—” 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): Trogtal quarries, Lautenthal, Germany · Las Asperezas mine, Argentina
- 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
- Umangite on Mindat.org
- Wikipedia article
- Wikidata item Q2462291 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Tetragonal
RedBlack
Soft, Scratches Easily