In what two ways do minerals form from magma? What types of minerals dominate the minerals that make up igneous rocks?

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The Answer is Depending upon the rate that magma cools, minerals crystallize and grow. Basalts that cool faster (on the surface of the Earth) are dominated by ferromagnesian (poor in silica or quartz) minerals and granites that cool slowly below the surface of the Earth are dominated by nonferromagnesian minerals (richer in silica or quartz).

In What Two Ways Do Minerals Form from Magma? What