Granite

Granite, the hard igneous rock Granite is a very hard crystalline, igneous or metamorphic rock primarily composed of feldspar, quartz and lesser amounts of dark minerals. It is visibly crystalline in texture. This igneous rock is created deep within the earth from magma, cooled slowly under great pressure. Granite, the hardest building stone has very dense grain which make it impervious to stain. Granite is available in a wide array of colors. varieties of different colors and textures such as black, grey, pink, multi colored etc. Uses It is used as a building material is used for wall cladding, roofing and flooring and a variety of other interior and exterior applications.

Granite is primarily composed of feldspar, quartz along with various other minerals in varying percentage,which are stated as follows:

Nominal chemical composition of various oxides

Silica(SiO2)	70-77%
Alumina(Al2O3)	11- 14%
Potassium Oxide(P2O5)	3 – 5%
Soda(Na2O)	3 – 5%
Lime	1%
Iron(Fe2O3)	1-2%
Iron(FeO)	1 – 3%
Magnesia(Mg0)	.5 – 1%
Titina	Less than 1%(.38%)
Water(H2O)	0.03%

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