IMA mineral species

Luxembourgite

🪶 Soft, Scratches Easily

AgCuPbBi₄Se₈

Bismuth-selenide mineral.

Gray

Luxembourgite specimen
Luxembourgite9.tif · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3
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💅🪙🍶🔪💎

A copper coin scratches it.

🔷 Monoclinic✏️ streak black
Chemical formulaAgCuPbBi₄Se₈
ElementsAg, Cu, Pb, Bi, Se
Crystal systemMonoclinic
Mohs hardness3
Density—
Streakblack
Colorgrey
IMA symbolLux

“—” 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): Bivels, Luxembourg

  • 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.