Properties
🔷 Monoclinic✏️ streak black
| Chemical formula | Ag₂S |
|---|---|
| Elements | Ag, S |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | black |
| Color | — |
| IMA symbol | Aca |
| Nickel–Strunz class | 2.BA.35 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Jáchymov, Czech Republic
- 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.
Varieties & related stones
Learn more
- Acanthite on Mindat.org
- Wikipedia article
- Wikidata item Q413498 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic
Black