Slate

​It is a metamorphic rock that belongs to the group of aluminum silicates with a lamellar appearance, its color is usually gray, greenish or black, and is used as mineral filler/additive in the rubber industry, civil construction (composition of waterproofing such as asphalt blanket , grout, two-component mortar), pozzolanic cement composition, friction (brake linings and pads), handicrafts, seed coating formulations, remineralizing/conditioning product used as stone dust in clearing to improve soil fertility, this product being supplied in 40 and 325 mesh granulometries/meshes.

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