Igneous Rocks

igneous rock  Igneous rock, any of various crystalline or glassy rocks formed by the cooling and solidification of magma, which is a hot (600 to 1300 °C, Igneous rocks can be divided into four categories based on their chemical composition: felsic, intermediate, mafic, and ultramafic The diagram of Bowen's

Igneous rocks are formed from molten rock called magma They are mostly crystalline and usually very hard to break  Granite Rock Type: Igneous An intrusive igneous rock that is felsic in composition and phaneritic in texture The minerals that are most

Igneous rocks form from cooling magma Magma that erupts onto Earth's surface is lava The chemical composition of the magma and the rate at The minerals in a phaneritic igneous rock are sufficiently large to see each individual crystal with the naked eye Examples of phaneritic igneous rocks are