IMA mineral species

Vonsenite

Fe²⁺₂Fe³⁺O₂(BO₃)

Borate mineral.

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

Properties

⛏ Mohs hardness5
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A steel knife scratches it, it won't scratch glass.

Chemical formulaFe²⁺₂Fe³⁺O₂(BO₃)
ElementsFe, O, B
Crystal systemOrthorhombic
Mohs hardness5
Density—
Streak—
Color—
IMA symbolVon
Nickel–Strunz class6.AB.30

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