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Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2.
Quartz has great economic importance. Many varieties are gemstones, including amethyst, citrine, smoky quartz, and rose quartz. Sandstone, composed mainly of quartz, is an important building stone.Large amounts of quartz sand (also known as silica sand) are used in the manufacture of glass and ceramics and for foundry molds in metal casting. Crushed quartz is used as an abrasive in sandpaper ...
Quartz is the most abundant mineral in Earth's crust and has many applications in glass, abrasives, gemstones, and electronics. Learn about its chemical composition, physical properties, and different colors and forms of quartz.
Quartz is a common and diverse mineral composed of silicon and oxygen. It forms in various geological settings and has many applications in glass, abrasive, gemstones and more.
Learn about the 24 different types of quartz, a common and varied mineral with unique characteristics. See photos, colors, and forms of quartz, and where to find them in the world.
Learn about quartz, a widespread and versatile mineral that forms in various geological settings and has many color varieties and uses. Explore its properties, identification, geologic importance, and economic applications with examples and images.
Quartz is a well-living company dedicated to igniting the power within us all to create a life well-lived. We help our communities shine brighter with access to innovative, high-quality and affordable health care and wellness programs.
Quartz is a common silicate mineral with various colors and forms. It is used in electronics, gemstones, and sand. Learn about its chemical formula, crystal system, hardness, and more.
Quartz is one of the most abundant minerals in the Earth's crust. Deposits of quartz are spread out across all continents and occur in all types of rocks, including igneous, metamorphic, and sedimentary. Quartz is the dominant mineral of mountain landscapes. Beaches, rivers, and deserts all contain quartz sand as one of their prominent materials.
Quartz is a common mineral in Earth's crust with many varieties and uses. Learn about its crystal structure, properties, types, and shocked quartz as evidence of a meteor impact.