IMA mineral species
Franconite
Na₂Nb₂O₅(OH)·9H₂O
Hydrous Na-Nb oxide mineral.
Properties
| Chemical formula | Na₂Nb₂O₅(OH)·9H₂O |
|---|---|
| Elements | Na, Nb, O, H |
| Crystal system | — |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Fra |
| Nickel–Strunz class | 4.FM.15 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Francon 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
- Franconite on Mindat.org
- Wikidata item Q2856361 (source of this page's data – you can correct it there)
IMA mineral species