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Granite

Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite has a medium to coarse texture, occasionally with some individual crystals larger than the groundmass forming a rock known as porphyry. Granites can be pink to dark gray or even black, depending on their chemistry and mineralogy. Outcrops of granite tend to form tors, and rounded massifs. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.

Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite has a medium to coarse texture, occasionally with some individual crystals larger than the groundmass forming a rock known as porphyry. Granites can be pink to dark gray or even black, depending on their chemistry and mineralogy. Outcrops of granite tend to form tors, and rounded massifs. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.

Granite is currently known only on Earth where it forms a major part of continental crust. Granite often occurs as relatively small, less than 100 km² stock masses (stocks) and in batholiths that are often associated with orogenic mountain ranges. Small dikes of granitic composition called aplites are often associated with the margins of granitic intrusions. In some locations very coarse-grained pegmatite masses occur with granite.

Granite has been intruded into the crust of the Earth during all geologic periods, although much of it is of Precambrian age. Granitic rock is widely distributed throughout the continental crust of the Earth and is the most abundant basement rock that underlies the relatively thin sedimentary veneer of the continents.

Granite is an igneous rock and is formed from magma. Granitic magma has many potential origins but it must intrude other rocks. Most granite intrusions are emplaced at depth within the crust, usually greater than 1.5 kilometres and up to 50 km depth within thick continental crust. The origin of granite is contentious and has led to varied schemes of classification. Classification schemes are regional; there is a French scheme, a British scheme and an American scheme. This confusion arises because the classification schemes define granite by different means. Generally the 'alphabet-soup' classification is used because it classifies based on genesis or origin of the magma.


Physical & Chemical Properties

Granite - Physical Properties
Porosity/permeability: 0.2 to 4%
Thermal Stability: Granite is highly stable thermally, therefore shows no changes with the change in temperature. Granite is impervious to weathering from temperature and even from the air borne chemicals. It is the high resistance to chemical erosion that makes granite useful for making tanks to store highly caustic material.
Compressive Strength: 1800 to 2100 Kg/cm2
Co-efficient of expansion: varies from 4.7x10-6 – 9.0x10-6(inch x inch)
Variegation: Granite shows consistency in color and texture
Hardness: It is the hardest building stone and hardness of granite that lends it excellent wear

Granite - Chemical Properties
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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Colors Available

Absolute Black Pearl Green Sadrili Grey Imperial Red
Imperial White Indian Juparana Kashmir Gold Kashmir White
Multi Pink Paradiso Raw Silk Saphire Blue
 
Galaxy Tan Brown Vizag Blue  
The above colors may have tonal variation between lot to lot

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Regular Sizes

All tile sizes are in cms (Cut to size) except where mentioned

Tiles
30 x 30
60 x 30
40 x 40
60 x 60
Slabs
3FT - 8FT x 6FT Height
 

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Thickness (Tiles & Slabs)

Slabs: 15mm to 20mm
Calibrated Tiles: 10mm to 15mm


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Products

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Any figure can be made if it is required
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Finishes

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Edges

Both hand chiseled and machine cut (sawn)
Please visit the edges section for more details
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