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Oxidation of iron in any rock is a very rapid process resulting from exposure of the pure iron within the rock to free oxygen. The red iron oxide that we see in sedimentary rocks today was formed millions of years ago during oxygenation events.

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What type o rock is iron?

Iron is a sedimentary rock.


Why does iron appear red in rock?

From the oxidation of iron minerals.


Is limonite an igneous sedimentary or metamorphic rock?

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What is the cementing material between the grains in a sedimentary rock?

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Which sedimentary rock is an important iron ore that is mined in northern Minnesota?

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