Chemical Formula Of Granite Rock

Granite is a hard coarse grained rock making up most of the earth.

Chemical formula of granite rock. However granite is composed mainly of the minerals potassium feldspar quartz hornblende and micas which are in turn composed of varying amounts of the elements silicon oxygen aluminum. Volcanic rock of equivalent chemical. Other minerals can give granite its great variety of colors and textures. Most rocks are composed of minerals minerals are defined by geologists as naturally occurring inorganic solids that have a crystalline structure and a distinct chemical composition.

Quartz alkali feldspar which contain alum. It consists chiefly of three minerals. 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. Chemical properties of granite granite is a hard igneous rock having a coarse grained surface chiefly composed of four minerals viz quartz alkali feldspar plagioclase feldspar and hornblende.

The characteristics of the granite are as following. These minerals provide the different colors to the granite that it possesses. Granite is the typical type of plutonic rocks it consists of feldspar quartz a few dark colored mineral sand mica. A worldwide average of the chemical composition of granite by weight percent based on 2485 analyses.

These other minerals include mica amphibole hornblende biotite and muscovite. Strictly speaking granite is an igneous rock with between 20 and 60 quartz by volume and at least 35 of the total feldspar consisting of alkali feldspar although commonly the term granite is used to refer to a wider range. The exact chemical composition will vary greatly but there is an average chemical composition for granite. This composition is as follows.

Sedimentary rocks formed by burial compression and chemical modification of deposited weathered rock debris or sediments at the earth s surface. Sio2 72 04 silica al2o3 14 42 alumina. The chemical formula for quartz is sio2.