IMA mineral species

Andersonite

🪶 Soft, Scratches Easily

Na₂Ca(UO₂)(CO₃)₃·6H₂O

Uranyl carbonate mineral.

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Andersonite specimen
Andersonite Tomeik.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness2.5
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💅🪙🍶🔪💎

Scratches with a fingernail.

Chemical formulaNa₂Ca(UO₂)(CO₃)₃·6H₂O
ElementsNa, Ca, U, O, C, H
Crystal systemTrigonal
Mohs hardness2.5
Density—
Streak—
Color—
IMA symbolAnr
Nickel–Strunz class5.ED.30

“—” 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): Hillside mine, 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.