Rocks and their use in construction

Different mineral species are used in construction, including magmatic rocks (like granite), metamorphic rocks (like a shale) or sedimentary rocks (like sand or clay). Sometimes they are combined by creating individual materials, for example, the SPPS fractions 0-80 is a crushed stone-sand mixture that can be used to lay a temporary road or arrange the base of motorways. Mineral species are also sold in a processed form for independent mixing or as part of building mixtures.