IMA mineral species
Grumantite
NaSi₂O₄(OH)·H₂O
Transitional structure between phyllosilicate and other silicate unit, mineral.
Properties
| Chemical formula | NaSi₂O₄(OH)·H₂O |
|---|---|
| Elements | Na, Si, O, H |
| Crystal system | Orthorhombic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Gmt |
| Nickel–Strunz class | 9.EH.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Alluaiv Mountain, Russia
- 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
- Grumantite on Mindat.org
- Wikidata item Q3777238 (source of this page's data – you can correct it there)
IMA mineral species
Orthorhombic