Properties
| Chemical formula | FeS₂ |
|---|---|
| Elements | Fe, S |
| Crystal system | Orthorhombic |
| Mohs hardness | — |
| Density | 4.939 g/cm³ |
| Streak | — |
| Color | — |
| IMA symbol | Mrc |
| Nickel–Strunz class | 2.EB.10a |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
⚠ Handle With Care Low caution
Why: Iron sulfide that decays even more readily than pyrite when damp, releasing sulfuric acid.
Safe handling: Keep it dry. Don't make water elixirs.
Sources: Wikipedia: Marcasite · Mindat: Marcasite. General safety information only, not medical advice. More on safe handling.
Varieties & related stones
Learn more
- Marcasite on Mindat.org
- Wikipedia article
- Wikidata item Q409087 (source of this page's data – you can correct it there)
IMA mineral species
Orthorhombic
YellowBrownGrayWhite & ClearMulticolor & Iridescent
Handle with careDon't make water elixirs