IMA mineral species
Epistolite
(Na☐)Nb₂Na₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₄
Seidozerite supergroup, sorosilicate mineral.
Properties
| Chemical formula | (Na☐)Nb₂Na₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₄ |
|---|---|
| Elements | Na, Nb, Ti, Si, O, H |
| Crystal system | Triclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Epi |
| Nickel–Strunz class | 9.BE.30 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Tunulliarfik fjord, Greenland
- 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
- Epistolite on Mindat.org
- Wikidata item Q3730667 (source of this page's data – you can correct it there)
IMA mineral species
Triclinic