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Silica sand
It is a compound of silicon dioxide, which is present in nature in several forms that vary in their natural and color characteristics, the most prominent of which are quartz (quartz) and flint, and in the form of cohesive layers of metamorphic rocks...
Due to its hardness, it is It is mainly used in glass, polishing materials, and metal casting molds, in addition to any use in the cement industry as a corrective material, in building materials, and as a filler in the paint industry.
Many areas where some of them are exploited in the manufacture of glass, cement and construction.