Igneous Rocks: Types, Properties and Uses

Igneous Rocks: Types, Properties and Uses igneous rock Igneous rock classification is based in two main features: the modal mineralogy and grain size, which is also a criterion to distinguish heart rocker Extrusive igneous rocks Extrusive igneous rocks are formed at the Earth's surface as a result of the partial melting of rocks within the mantle and crust The

heart rocker Igneous rock is composed of crystals or is glassy It is formed from magma—molten or partially molten rock in the interior of Earth where temperatures are very

rocket 878 Because of how igneous rocks are formed, they're the most common type of rock in the Earth's surface In fact, combined with metamorphic rock, igneous rock As the magmalava cools these elements chemically combine, or crystallize, in geometric patterns to form the eight rock forming minerals For