IMA mineral species

Barnesite

🪶 Soft, Scratches Easily

(Na,Ca)V₆O₁₆ * 3H₂O

Rare mineral, hydrous sodium vanadate(V).

Barnesite specimen
Barnesite-565667.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3
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💅🪙🍶🔪💎

A copper coin scratches it.

Chemical formula(Na,Ca)V₆O₁₆ * 3H₂O
ElementsNa, Ca, V, O, H
Crystal systemMonoclinic
Mohs hardness3
Density—
Streak—
Color—
IMA symbolBar
Nickel–Strunz class4.HG.45

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 3: softer than a steel knife, so it scratches easily. Store it apart from harder stones.

🌍 Where it's found

Type locality (where it was first described): Thompsons district, United States