Iron ore is a rock containing iron, usually in the form of oxides, such as hematite.
Iron ores have a variable iron content depending on the iron mineral. Additionally, isomorphism, almost always present in natural minerals, reduces the nominal content.
Uses[edit | edit source]
Natural sources[edit | edit source]
Bog iron[edit | edit source]
An easily accessible source of iron ore is so-called “bog iron”, formed naturally in bogs or swamps by the oxidation of iron minerals dissolved in water. It can be identified by its reddish brown color and uneven texture. Early metallurgists identified bog-iron deposits by indicators such as withered grass, a wet environment, hygrophilous grass-dominated vegetation, and reddish-brown solutions or depositions in nearby waters. Chemically, bog iron is mostly made up of the mineral geothite, a form of iron oxyhydroxide that is also the main component of rust. Because iron-bearing water continues to flow into a bog over time, the iron in a given bog will replenish over the course of a few decades.
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|This article uses material from the Wikipedia article Bog_iron, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).|
|This article uses material from the Wikipedia article Iron_ore, which is released under the Creative Commons Attribution-ShareAlike 3.0 Unported License (view authors).|