IMA mineral species
Rankachite
Ca₀.₅(V₄+,V₅+)(W₆+,Fe³⁺)₂O₈(OH) * 2H₂O
Wolframate mineral.
Properties
| Chemical formula | Ca₀.₅(V₄+,V₅+)(W₆+,Fe³⁺)₂O₈(OH) * 2H₂O |
|---|---|
| Elements | Ca, V, W, Fe, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Rka |
| Nickel–Strunz class | 7.GB.25 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Clara mine, Germany
- 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
- Rankachite on Mindat.org
- Wikidata item Q3930122 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic