IMA mineral species
Steedeite
NaMn₂[Si₃BO₉](OH)₂
Single loop-branched dreier ring chain mineral.
Properties
| Chemical formula | NaMn₂[Si₃BO₉](OH)₂ |
|---|---|
| Elements | Na, Mn, Si, B, O, H |
| Crystal system | Triclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Sed |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Poudrette quarry, 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
- Steedeite on Mindat.org
- Wikidata item Q19861291 (source of this page's data – you can correct it there)
IMA mineral species
Triclinic