IMA mineral species
Andyrobertsite
KCdCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O
Arsenate mineral.
Properties
| Chemical formula | KCdCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O |
|---|---|
| Elements | K, Cd, Cu, As, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 3 |
| Density | 4.011 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Arb |
| Nickel–Strunz class | 8.DH.50 |
“—” 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.
Learn more
- Andyrobertsite on Mindat.org
- Wikipedia article
- Wikidata item Q3616576 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Monoclinic
Blue
Soft, Scratches Easily