Properties
⛏ Mohs hardness4.5
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
🔷 Trigonal✏️ streak white
| Chemical formula | (Na₁.₅Ca₀.₅)(Mg₁.₅Al₀.₅)F₆F |
|---|---|
| Elements | Na, Ca, Mg, Al, F |
| Crystal system | Trigonal |
| Mohs hardness | 4.5 |
| Density | — |
| Streak | white |
| Color | colorlessness |
| IMA symbol | Fnc |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Mount Cleveland tin mine, Luina, Australia
- 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
- Fluornatrocoulsellite on Mindat.org
- Wikidata item Q19833354 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Trigonal
White & Clear