Properties
| Chemical formula | Mn²⁺Fe³⁺₂O₄ |
|---|---|
| Elements | Mn, Fe, O |
| Crystal system | Cubic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Jcb |
| Nickel–Strunz class | 4.BB.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Jakobsberg mine, Sweden
- 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
- Jacobsite on Mindat.org
- Wikipedia article
- Wikidata item Q2704887 (source of this page's data – you can correct it there)
IMA mineral species
Cubic
BrownBlack