Granite Stone

Granite is a type of igneous rock that is known as the most resistant rock. What is granite and what factors contribute to the high resistance of this rock? In this article, we want to find out the reason for the high resistance of this rock by examining the physical and chemical properties of granite. Granite is highly resistant to abrasion, pressure, acid, and weight, and because of these properties, it has numerous applications in construction.

What is granite?
Granite is a brightly colored igneous rock that is known as the strongest natural rock. The particles in the texture of granite are so large that you can see the components of the rock with the naked eye.

How granite is formed
Molten materials boil from deep layers of the earth and try to reach the surface of the earth; but if they fail to do so, they slowly cool and crystallize slightly below the surface of the earth, becoming granite. The slower the magma cools, the larger the crystals in granite will be.

The rate at which magma cools has a direct effect on the size of the crystals within granite.

In certain cases, the crystals in granite may be up to 5 centimeters in diameter. Granite is usually formed at the junction of continents and oceanic plates; interestingly, granites cool near the surface of the earth and are therefore affected by sedimentary erosion.

Granite is the hardest natural stone after diamond and is made of quartz. This stone has high thermal resistance and, with very low porosity, low water absorption. Granite has a high density and is resistant to acid.

What materials is granite made of?
The main part of granite is quartz and feldspar. It is interesting to know that we only call a stone granite when it contains at least 20% quartz and no more than 20% dark minerals. Feldspar is a type of crystalline mineral that is composed of aluminum silicate, sodium, potassium, and calcium and is found abundantly in igneous rocks. Of course, mica, amphibole, and other minerals are also found in the composition of granite.

Due to the presence of mica in granite, it shines when you put this stone under the light.

If you hold granite in the sun, the stone will sparkle due to the presence of mica. In fact, all the fine sparkling holes that you see on the surface of granite are mica.

Granite Stone Colors
The creation of red, pink, gray, blue-green, black, and white colors in granite is actually the result of the presence of different minerals in this stone and the speed of cooling of the magma.