Igneous rocks

igneous rock  Uses of igneous rocks : · Granite is very strong and long-lasting, used for making kitchen countertops, building materials · Gabbro is another Igneous rocks The first rocks on Earth were igneous rocks Igneous rocks are formed by the cooling and hardening of molten material called magma The word

An ultramafic, coarse-grained igneous rock Peridotite will form under Earth's surface from slowly-cooling magma It is less rare than Komatiite, Among the igneous rocks, granite and rhyolite contain relatively low concentrations of essential plant nutrients, with the exception of potassium In

rocks have higher Sr concentrations than Rock 1976 ) Sr = 1840 ppm ) , whereas igneous rocks of Variscan age between 360 and 260 Igneous rocks can be divided into four categories based on their chemical composition: felsic, intermediate, mafic, and ultramafic The diagram of Bowen's