Name three minerals present in igneous rocks. - Leaving Cert Agricultural Science - Question (e) - 2009

Igneous rocks are primarily composed of minerals that crystallize from molten material. Three common minerals found in igneous rocks include:

1. Mica: A group of silicate minerals known for their sheet-like structure and excellent cleavage, commonly found in granitic rocks.

2. Feldspar: The most abundant group of minerals in the Earth's crust, feldspar is crucial in forming granite and other igneous rocks.

3. Quartz: A hard, crystalline mineral composed of silicon dioxide (SiO₂), quartz is often present in significant amounts in granite and other igneous rocks.