Properties
| Chemical formula | K₂SiF₆ |
|---|---|
| Elements | K, Si, F |
| Crystal system | Hexagonal |
| Mohs hardness | 3 |
| Density | 2.981 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Dma |
| Nickel–Strunz class | 3.CH.20 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
🌍 Where it's found
Type locality (where it was first described): La Fossa crater, Italy
- 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
- Demartinite on Mindat.org
- Wikidata item Q19833498 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Hexagonal
Soft, Scratches Easily