How do minerals form from magma?

1 Answer
Jan 22, 2015

Magma is the form of lava that occurs within the earth’s crust.

When minerals are exposed to extreme heat within the crust or placed under immense pressure, they begin to heat up. As the minerals heat up, magma begins to form beneath the surface. As soon as the magma emerges through the crust, it is known as lava. As the lava eventually cools, minerals begin to harden within forming new rock formations with new chemical compositions.