Intrusive igneous rocks form in magma chambers that are deep underground.
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Courtesy of Boise National Forest
Igneous Rocks Inside the Earth!
These types of igneous rocks are made deep underground. In fact, it is possible that below your feet, deep within the Earth there are igneous rocks being made right now! There, hot magma cools very slowly. Slow cooling makes rocks with large mineral crystals.
Take a look at an igenous rock that formed deep underground! It is called granite.
Find out more about intrusive igneous rocks by visiting our intermediate level page!
Last modified June 17, 2003 by Lisa Gardiner.
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