IMA mineral species
Niocalite
Ca₇Nb(Si₂O₇)₂O₃F
Sorosilicate mineral.
Properties
⚖ Density3.17 g/cm³
Average
| Chemical formula | Ca₇Nb(Si₂O₇)₂O₃F |
|---|---|
| Elements | Ca, Nb, Si, O, F |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | 3.17 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Nio |
| Nickel–Strunz class | 9.BE.17 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Oka, 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
- Niocalite on Mindat.org
- Wikidata item Q2796321 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic