IMA mineral species
Arseniosiderite
Ca₂Fe³⁺₃(AsO₄)₃O₂ * 3H₂O
Arsenate mineral.
Properties
⛏ Mohs hardness4.5
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
| Chemical formula | Ca₂Fe³⁺₃(AsO₄)₃O₂ * 3H₂O |
|---|---|
| Elements | Ca, Fe, As, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 4.5 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Assd |
| Nickel–Strunz class | 8.DH.30 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 4.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
Learn more
- Arseniosiderite on Mindat.org
- Wikipedia article
- Wikidata item Q3623968 (source of this page's data – you can correct it there)
IMA mineral species
4–5
Monoclinic
YellowBrownBlack
Soft, Scratches Easily