IMA mineral species

Metacinnabar

🪶 Soft, Scratches Easily

HgS

Sulfide mineral.

BlackGray

Metacinnabar specimen
Metacinnabar-146931.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3
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💅🪙🍶🔪💎

A copper coin scratches it.

⚖ Density7.376 g/cm³
Very heavy
🔷 Cubic✏️ streak black
Chemical formulaHgS
ElementsHg, S
Crystal systemCubic
Mohs hardness3
Density7.376 g/cm³
Streakblack
Color—
IMA symbolMcin
Nickel–Strunz class2.CB.05a

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 3: 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): Redington mine, United States