IMA mineral species
Carlfrancisite
Mn²⁺₃(Mn²⁺,Mg,Fe³⁺,Al)₄₂(As³⁺O₃)₂(As⁵⁺O₄)₄[(Si,As⁵⁺)O₄]₆[(As⁵⁺,Si)O₄]₂(OH)₄₂
Arsenosilicate mineral.
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Properties
| Chemical formula | Mn²⁺₃(Mn²⁺,Mg,Fe³⁺,Al)₄₂(As³⁺O₃)₂(As⁵⁺O₄)₄[(Si,As⁵⁺)O₄]₆[(As⁵⁺,Si)O₄]₂(OH)₄₂ |
|---|---|
| Elements | Mn, Mg, Fe, Al, As, O, Si, H |
| Crystal system | Trigonal |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Cfc |
| Nickel–Strunz class | 8.BE.45 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Kombat, Namibia
- 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
- Carlfrancisite on Mindat.org
- Wikidata item Q19833299 (source of this page's data – you can correct it there)
IMA mineral species
Trigonal