IMA mineral species

Jamesite

🪶 Soft, Scratches Easily

Pb₂Zn(Fe²⁺,Zn)₂Fe³⁺₄(AsO₄)₄(OH)₁₀

Arsenate mineral.

Jamesite specimen
Jamesite-177451.jpg · Wikimedia Commons (see file page for author & license)

Properties

⛏ Mohs hardness3
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💅🪙🍶🔪💎

A copper coin scratches it.

⚖ Density5.084 g/cm³
Very heavy
Chemical formulaPb₂Zn(Fe²⁺,Zn)₂Fe³⁺₄(AsO₄)₄(OH)₁₀
ElementsPb, Zn, Fe, As, O, H
Crystal systemTriclinic
Mohs hardness3
Density5.084 g/cm³
Streak—
Color—
IMA symbolJms
Nickel–Strunz class8.BK.25

“—” 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): Tsumeb Mine, Namibia

  • 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.