IMA mineral species
Siderite
FeCO₃
Carbonate mineral.
Properties
⛏ Mohs hardness3.5 – 4.5
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
⚖ Density3.96 g/cm³
Heavy
🔷 Trigonal✏️ streak white
| Chemical formula | FeCO₃ |
|---|---|
| Elements | Fe, C, O |
| Crystal system | Trigonal |
| Mohs hardness | 3.5 – 4.5 |
| Density | 3.96 g/cm³ |
| Streak | white |
| Color | — |
| IMA symbol | Sd |
| Nickel–Strunz class | 5.AB.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3.5 – 4.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
Learn more
- Siderite on Mindat.org
- Wikipedia article
- Wikidata item Q192669 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Trigonal
RedYellowGreenBrownBlackGrayWhite & Clear
Soft, Scratches Easily