IMA mineral species
Potassic-fluoro-hastingsite
KCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂F₂
Ca-amphibole, double chain inosilicate mineral.
Properties
⛏ Mohs hardness5 – 7
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Harder than quartz: scratches glass and steel.
| Chemical formula | KCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂F₂ |
|---|---|
| Elements | K, Ca, Fe, Si, Al, O, F |
| Crystal system | Monoclinic |
| Mohs hardness | 5 – 7 |
| Density | — |
| Streak | — |
| Color | — |
| Cleavage | {110} |
| IMA symbol | Pfhst |
| Nickel–Strunz class | 9.DE.15 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Learn more
- Potassic-fluoro-hastingsite on Mindat.org
- Wikidata item Q17466462 (source of this page's data – you can correct it there)
IMA mineral species
5–6
Monoclinic