IMA mineral species

Uranopilite

🪶 Soft, Scratches Easily

(UO₂)₆SO₄O₂(OH)₆·14H₂O

Uranyl sulfate mineral.

Uranopilite specimen
Uranopilite-96146.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness2
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💅🪙🍶🔪💎

Scratches with a fingernail.

Chemical formula(UO₂)₆SO₄O₂(OH)₆·14H₂O
ElementsU, O, S, H
Crystal systemTriclinic
Mohs hardness2
Density—
Streak—
Color—
IMA symbolUp
Nickel–Strunz class7.EA.05

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 2: 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): Jáchymov, Czech Republic · Johanngeorgenstadt, 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.