IMA mineral species

Theuerdankite

🪶 Soft, Scratches Easily

Ag₃AsO₄

Theuerdankite specimen
Theuerdankite.png · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness2
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💅🪙🍶🔪💎

Scratches with a fingernail.

Chemical formulaAg₃AsO₄
ElementsAg, As, O
Crystal systemCubic
Mohs hardness2
Density—
Streak—
Color—
IMA symbolTd
Nickel–Strunz class8.BO.

“—” 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.