It is a volcanic rock of dark, rich in silicates of magnesium and iron and low silica content. It may contain minor quantities of both quartz and olivine or feldspar type. It is one of the most abundant in the Earth’s crust rocks.
Granilouro works with a multitude of different kinds of basalts from around the world. These are the basalts of greatest demand, the following images link to the technical characteristics of each material:
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