Crystopedia
IMA mineral species

Changchengite

🪶 Soft, Scratches Easily

IrBiS

Iridium bismuthide-sulfide mineral.

Properties

⛏ Mohs hardness3.5
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💅🪙🍶🔪💎

A copper coin scratches it.

⚖ Density11.964 g/cm³
Very heavy
🔷 Cubic✏️ streak black
Chemical formulaIrBiS
ElementsIr, Bi, S
Crystal systemCubic
Mohs hardness3.5
Density11.964 g/cm³
Streakblack
Color—
IMA symbolCcg
Nickel–Strunz class2.EB.25

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

Care & Handling

  • 🪶 Soft, Scratches Easily Mohs 3.5: 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): Gaositai Cr-PGE deposit, People's Republic of China · Chengde, People's Republic of China

  • 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.

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