IMA mineral species
Preiswerkite
NaMg₂Al(Al₂Si₂O₁₀)(OH)₂
True mica, phyllosilicate mineral.
Properties
| Chemical formula | NaMg₂Al(Al₂Si₂O₁₀)(OH)₂ |
|---|---|
| Elements | Na, Mg, Al, Si, O, H |
| Crystal system | — |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Pwk |
| Nickel–Strunz class | 9.EC.20 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Binn valley, Switzerland
- 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
- Preiswerkite on Mindat.org
- Wikidata item Q3910250 (source of this page's data – you can correct it there)
IMA mineral species