It is found in the most ancient geological sediments and is compacted and modified by pressure and later metamorphic processes clay.

The microscope opens, moreover, in this rock a constant admixture of quartz grains, mica leaves, yellowish characteristic of rutile needles and many less common minerals.

In Russia, varieties of clayshale , the most technically useful, are known in the Podolsk, Kherson and Yekaterinoslav provinces, in the Crimea, in the Caucasus, the Urals and in the Olonets province.Clay shales are used as facing, roofing and slate material.Slate is a common name for a group of regionally metamorphosed rocks of the middle stages of metamorphism.

It is yellow, brown, red, burgundy, gray, green, black and intermediate shades.Major deposits: Russia, Europe, USA, etc.Medicinal propertiesLithotherapists argue that the use of slates as a building material is associated not only with the availability of stone and ease of processing, but also with the fact that it has a positive effect on the human body as a whole.

Human dwellings, in the construction of which slate was used, become for the residents a real health resort: the stone relieves stress, nervous tension, has a beneficial effect on the psycho-emotional state of people, helps to get rid of insomnia, and heals many nervous disorders.Magical propertiesSlateconnects its owner with the cosmos.

It accumulates the signals sent to us from the Universe and transfers them to its owner.