Chemical Formula Of Granite Rock

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.

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. Granite is a plutonic igneous rock. This composition is as follows. 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. Quartz alkali feldspar which contain alum. Granite is a hard coarse grained rock making up most of the earth. The chemical formula for quartz is sio2.

Other minerals can give granite its great variety of colors and textures. 70 18 silicon dioxide sio2 14 47 aluminum oxide al2o3 4 11 potassium oxide. Sedimentary rocks formed by burial compression and chemical modification of deposited weathered rock debris or sediments at the earth s surface. Volcanic rock of equivalent chemical.

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. Sio2 72 04 silica al2o3 14 42 alumina. These other minerals include mica amphibole hornblende biotite and muscovite.

A worldwide average of the chemical composition of granite by weight percent based on 2485 analyses. The main chemical propositions of the granite are sio2 65 70 a little of al 2 o 3 cao mgo and fe 2 o 3 thus the granite is acid rock. The characteristics of the granite are as following.