Slate is a sedimentary derivation rock with fine granulation, weakly metamorphized, characterized by perfect cleavage, thus being able to form big sheets of just a few millimeters in thickness, in a continuous flat surface.
It is composed mainly by quartz, white mica, chlorite, feldspat, carbonate and iron oxide.
Its physical properties, such as preferential cleavage, average hardness, low porosity, high mechanical resistance, resistance of its composing minerals to bad weather, etc., allow for its utilization as revetment in various areas of building construction and architecture.
VARIETIES
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Slate
