IMA mineral species
Feklichevite
Na₁₁Ca₉(Fe³⁺,Fe²⁺)₂Zr₃Nb[Si₂₅O₇₃](OH,H₂O,Cl,O)₅
Cyclosilicate mineral.
Properties
| Chemical formula | Na₁₁Ca₉(Fe³⁺,Fe²⁺)₂Zr₃Nb[Si₂₅O₇₃](OH,H₂O,Cl,O)₅ |
|---|---|
| Elements | Na, Ca, Fe, Zr, Nb, Si, O, H, Cl |
| Crystal system | Trigonal |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Fek |
| Nickel–Strunz class | 9.CO.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Kovdor phlogopite mine, 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
- Feklichevite on Mindat.org
- Wikipedia article
- Wikidata item Q3742064 (source of this page's data – you can correct it there)
IMA mineral species
Trigonal
Brown