Here's why:
* Silicon and Oxygen: The Earth's crust and mantle are rich in silicon and oxygen. These elements readily combine to form silicate minerals, which make up the majority of igneous rocks.
* Common Silicate Minerals: Some common silicate minerals found in igneous rocks include:
* Feldspar: The most abundant mineral group in the Earth's crust.
* Quartz: A hard, durable mineral often found in granite.
* Pyroxene: A common mineral in mafic and ultramafic igneous rocks.
* Amphibole: Another common mineral found in various igneous rocks.
* Olivine: A green mineral common in mafic and ultramafic rocks.
Note: While silicates dominate, igneous rocks can also contain other minerals like oxides, sulfides, and carbonates, but these are generally present in lesser amounts.
