IMA mineral species
Osumilite-(Mg)
KMg₂Al₃(Al₂Si₁₀)O₃₀
Cyclosilicate mineral.
Properties
⛏ Mohs hardness6.5
💅🪙🍶🔪💎
Scratches glass; quartz scratches it.
| Chemical formula | KMg₂Al₃(Al₂Si₁₀)O₃₀ |
|---|---|
| Elements | K, Mg, Al, Si, O |
| Crystal system | Hexagonal |
| Mohs hardness | 6.5 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Osm-Mg |
| Nickel–Strunz class | 9.CM.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Caspar quarry, Germany
- 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
- Osumilite-(Mg) on Mindat.org
- Wikidata item Q3886988 (source of this page's data – you can correct it there)
IMA mineral species
6–7
Hexagonal