Iron Ore
What is Iron Ore?
Iron ore is a rock from which metallic iron can be economically extracted. The principal iron ore minerals are hematite (Fe2O3) and magnetite (Fe3O4). Iron ores are typically found in banded iron formations (BIFs), which are sedimentary rocks composed of alternating layers of iron oxides and silica. The formation of iron ore deposits is often associated with ancient geological processes, including the oxidation of iron in seawater and subsequent precipitation. Iron ore is a crucial raw material for the production of steel, which is used in a wide range of industries, including construction, manufacturing, and transportation.
Optical Properties
- Refractive Index
- 2.42
- Birefringence
- 0.226
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- 0.24
Discover Values
This stone excels in cultural value.
Iron Ore Market Value Calculator
Estimate the market value of Iron Ore using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Iron Ore Localities Map
See where Iron Ore is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Various, including red, brown, yellow, and black
- Hardness (Mohs)
- 5.5-6.5
- Density
- 3.5-5.2 g/cm³
- Luster
- Metallic, dull to earthy
- Crystal System
- Isometric
Chemical Properties
- Chemical Formula
- Fe2O3 (Hematite), Fe3O4 (Magnetite)
- Elements
- Fe, O
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