IMA mineral species

Heinrichite

🪶 Soft, Scratches Easily

Ba(UO₂)₂(AsO₄)₂·10H₂O

Barium uranyl arsenate mineral.

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Heinrichite specimen
Heinrichite.JPG · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness2.5
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💅🪙🍶🔪💎

Scratches with a fingernail.

Chemical formulaBa(UO₂)₂(AsO₄)₂·10H₂O
ElementsBa, U, O, As, H
Crystal systemMonoclinic
Mohs hardness2.5
Density—
Streak—
Color—
IMA symbolHrc
Nickel–Strunz class8.EB.05

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 2.5: 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): Lakeview, 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.