Igneous are formed when geological movement in the Earth causes magma to reach the surface become lava, flow and eventually cool down and are stone. Some Igneous rocks are:Andesite, Basalt, Diorite, Pumice, Obsidian, Granite, Rhyolite,
Monzonite, Dunite, Gabbro and Pyroxenite also some crystals found in igneous rocks are:Quartz, Amphibole, Biotite, Olivine, Pyroxene and Muscovite.
Monzonite, Dunite, Gabbro and Pyroxenite also some crystals found in igneous rocks are:Quartz, Amphibole, Biotite, Olivine, Pyroxene and Muscovite.