IMA mineral species
Pentagonite
Ca(VO)Si₄O₁₀ * 4H₂O
Calcium vanadium phyllosilicate mineral.
Properties
| Chemical formula | Ca(VO)Si₄O₁₀ * 4H₂O |
|---|---|
| Elements | Ca, V, O, Si, H |
| Crystal system | Orthorhombic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Ptg |
| Nickel–Strunz class | 9.EA.55 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Owyhee Dam, United States
- 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
- Pentagonite on Mindat.org
- Wikipedia article
- Wikidata item Q1070745 (source of this page's data – you can correct it there)
IMA mineral species
Orthorhombic
GreenBlue