What Is The Chemical Composition Of Granite And Basalt

Two mica granites are typically high in potassium and low in plagioclase and are usually s type granites or a type granites.

What is the chemical composition of granite and basalt.

All rocks of igneous origin consist of magma or molten earth that finds its way up to. Though a very common rock granite is far from ordinary. Earth contains three kinds of rocks namely igneous rocks sedimentary rocks and metamorphic rocks basalt and granite are two types of igneous rocks. Granites are the most abundant plutonic rocks of mountain belts and continental.

Basalt is an igneous volcanic rock that forms commonly in oceanic crust and parts of. It has even started replacing marble because of its more durable qualities and resistance to weather and acid rain. Granite is a felsic rock meaning that it has a high silicon content. Basalt as a mafic rock contains more calcium oxide manganese oxide and iron compounds than granite.

Volcanic rock of equivalent chemical composition and mineralogy is called rhyolite. It is mostly made out of quartz mica and feldspar. Basalt can form in a few days to months whereas granite plutons can take millions of years to cool and harden. The chemical composition of granite is typically 70 77 silica 11 13 alumina 3 5 potassium oxide 3 5 soda 1 lime 2 3 total iron and less than 1 magnesia and titania.

Its high iron content gives it magnetic properties and it may show signs of rust when exposed to air. A granite containing both muscovite and biotite micas is called a binary or two mica granite. Basalt is more common in oceanic crust while granite is more common in continental crust. The chemical composition as well as the formation of granite inside the earth s surface produces an incredible material that is valued for its looks and physical properties.