What is limestone?

Limestone is a kind of sedimentary rock, the main component of which is calcium with a small fraction of various impurities of clay, silicon and even skeletons of microorganisms. In nature, as a rule, there is beige or slightly yellowish limestone, depending on the type of impurity prevailing in the rock, less often pink shades can be seen.

Types of limestone


By its direct origin, limestone material is:
- organogenic, that is, formed due to the active compound together of various organic residues,
- chemogenic, arising through the release of calcium from various solutions,
- detrital, formed by the concentration of fragments of the oldest limestone sedimentary rocks.
Typical limestone lies in whole layers in the basins of shallow sea, less often fresh water, therefore the extraction of this most valuable rock is carried out in a simple, open way, that is, with the use of crowbars and conventional excavators.

Types of limestone


Depending on the type of properties with which nature has endowed the rock, it is customary to distinguish marble, as well as porous and highly dense limestone. The first, as a rule, is used to create a variety of sculptures, it is a close relative of marble. Dense rock is an excellent material for the production of finishing materials, it can be found on the outer cladding of the facades of many modern buildings and even in the Egyptian pyramids.
In our country, marked by harsh climatic conditions, special, frost-resistant rocks are used, which have long been used in the construction of Orthodox churches.
But porous limestones have their internal division according to the degree of granularity inherent in them. There are, as a rule, shell, oolitic and other porous materials. Shellfish is a highly decorative material, as you might guess, consisting of small shells, which is what is commonly called chalk.
Due to its special thermal insulation properties, strength, special ease of processing and durability, limestone became the basis for the creation of many building materials.It can be processed in any direction, it is perfectly amenable to cutting, splitting, sawing. Concrete and lime, used for the construction of foundations of the building are also derived from ordinary limestone. Limestone is used in the food, and petrochemical, and leather industries, and even the paint industry, limestone is an indispensable basis for many of the necessary mineral fertilizers used for soda production.