Properties
⛏ Mohs hardness3
💅🪙🍶🔪💎
A copper coin scratches it.
🔷 Triclinic✏️ streak black
| Chemical formula | TlAg₃Au₃Sb₇S₆ |
|---|---|
| Elements | Tl, Ag, Au, Sb, S |
| Crystal system | Triclinic |
| Mohs hardness | 3 |
| Density | — |
| Streak | black |
| Color | black |
| IMA symbol | Tby |
“—” 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): Hemlo gold deposit, Canada
- 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
- Thunderbayite on Mindat.org
- Wikidata item Q101084511 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Triclinic
Black
Soft, Scratches Easily