IMA mineral species

Volborthite

Cu₃V₂O₇(OH)₂·2H₂O

Polyvanadate mineral.

YellowGreen

Volborthite specimen
Volborthite-291898.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3.5
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A copper coin scratches it.

Chemical formulaCu₃V₂O₇(OH)₂·2H₂O
ElementsCu, V, O, H
Crystal systemMonoclinic
Mohs hardness3.5
Density—
Streak—
Color—
IMA symbolVbo
Nickel–Strunz class8.FD.05

“—” means no reliable value in Wikidata yet. Check Mindat for full data.