Granite is the most common deep rock that arose from a fiery liquid melt in the bowels of the earth’s crust. The appearance of granites is not tied to any particular geological era; they have formed many times throughout the history of the Earth. The name of the rock comes from the Latin granum (“granum”) – grain and is associated with its granular structure.
The density of granites is on average 2600 kg/m3, the compressive strength is 100 … 300 MPa. The hardness of granites on the Mohs scale is about 7. The texture of granite is massive. “Feldspar, quartz, mica – I will never forget” – this is how a popular saying common among German miners sounds in Russian translation, somewhat simplified interpretation of the composition of granite.
Due to the high content of light components, granite is usually colored in light tones. Whether bluish, yellowish, reddish, greenish or grey – granite of normal composition always leaves the general impression of a light-coloured rock. Granites owe their colour shades to feldspar.
Granite is a favourite building stone. Granite has high mechanical strength, is frost-resistant (due to its low porosity and low water absorption), resists abrasion well, is polished and retains its polish for decades. Coloured granite varieties are used for cladding facades and flooring, as well as for creating monumental sculptures.
The wide distribution of granites in many varieties has given rise to a host of their names. In petrography (the science of the composition and origin of rocks), granites are divided mainly by colour components (for example, hornblende or two-mica granite). But in the construction industry, granites are named either by color (red granite), or most often by location (for example, Letnerechensky granite).
Granite mined by the Dobryn company is a premium class material, and stone cladding is the standard of prestige and respectability!