Flos ferri
Variety CaCO3
Also called Coralloid aragonite
Take care.
- Fragile: Handle it gently and pack it well; it breaks or crumbles easily.
About it
Aragonite in white, branching, coral-like growths, named "flower of iron" because it lines cavities in iron ore. Classic from the Erzberg at Eisenerz in Styria, Austria.
- Type
- Variety
- Group
- Aragonite variety
- Formula
- CaCO3
- Hardness (Mohs)
- 3.5–4
- Specific gravity
- 2.93–2.95
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Orthorhombic
- Colours
- white, bluish white
- Transparency
- translucent, opaque
- Cleavage and fracture
- distinct in one direction; subconchoidal fracture
Typical values: real specimens vary. For more, see mindat.org.