Difference Between Granite and Marble

What’s the difference between granite and marble? Granite is a type of magmatic rock, while its non-metamorphic grains consist of quartz and other minerals. Marble is a metamorphic rock originated from limestone.

Granite is widely used in civil construction because it is a hard and sturdy stone. One of its main features is to be very compact, which makes it a good material in works.

Marble is also widely used in construction. It is also attractive in the trade of ornamental rocks, because depending on the chemical composition of the marble, can have different textures.

  Granite Marble
Definition Magmatic/igneous rock. Metamorphic rock.
Training Through the cooling of the magma. Through the exposure of limestone to high temperatures and low to moderate pressure.
Mineralogical composition Quartz, Mica and feldspar. Calcite and dolomite, but usually also has quartz, mica and feldspar.

What’s granite?

What's granite

Granite is a magmatic rock, that is, it is the result of the cooling of molten magma.The mineralogical composition of granite can be varied, because in addition to quartz, it has mica and feldspar, which gives different colors for granite.

The feldspar alters the chromatic pattern of granite, providing diverse colors to the rock, which can go from cream to red. Black granite gains coloration due to the presence of Ferro-Magnesians silicates.

The clear granite, which is the most commonly found, has fewer iron-magnesians minerals and are formed up to 95% by quartz and feldspar.

To measure the quality of the granite, the professionals look for the characteristics of texture, chemical and mineralogical composition and the structure of the crystals in the rock.

What’s marble?

What's marble

Marble is a metamorphic rock. This means that the original rock has undergone a transformation. In the case of marble, it is the result of the exposure of limestone at high temperatures, with low to moderate pressure.

Therefore, miners search for marble in regions with high incidence of limestone and where, probably, there was volcanic activity.

The rock is highly appreciated for ornamental issues in civil construction. In buildings, they can serve for various purposes, such as the pillar of a structure for example. Because it is easy to polish, for home use, marble tables are common due to the toughness and beauty that marble can have.

It is a rock formed mainly by the minerals calcite and dolomite, but also has quartz in composition. Generally, it is a white stone, but can contain varied colors created by heat and pressure at the time of formation.

Marble is appreciated from antiquity for use in buildings, sculptures, vases and other ornaments.

Metamorphic rocks x magmatic rocks

The main difference between granite and marble is that, while the second is a metamorphic rock, granite is a magmatic rock, also called the igneous.

A metamorphic rock is when a material of origin, in the case of marble limestone, is exposed to high temperatures and pressures on the mantle of the Earth. With this, the limestone becomes marble.

Granite, in turn, is formed by the cooling of the magma. In this sense, they can be extrusive, when exposed by volcanic eruptions, or intrusive, when the cooling took off below the surface, creating a granite reserve.