IMA mineral species

Sylvanite

🪶 Soft, Scratches Easily

AgAuTe₄

Telluride mineral.

GrayWhite & Clear

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

Properties

⛏ Mohs hardness1.5 – 2
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💅🪙🍶🔪💎

Scratches with a fingernail.

⚖ Density7.9 – 8.3 g/cm³
Very heavy
Chemical formulaAgAuTe₄
ElementsAg, Au, Te
Crystal systemMonoclinic
Mohs hardness1.5 – 2
Density7.9 – 8.3 g/cm³
Streak—
Color—
IMA symbolSyv
Nickel–Strunz class2.EA.05

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 1.5 – 2: softer than a steel knife, so it scratches easily. Store it apart from harder stones.