mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, varies in color (clear, white, yellow, brown, amber), vitreous to greasy luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, varies in color (clear, white, yellow, brown, amber), vitreous to greasy luster, trigonal crystal system, conchoidal fracture, specific gravity of 2.65
Formation & geological history
Formed in a wide variety of geological environments, frequently crystallizing from silica-rich hydrothermal solutions or cooling magma, and commonly found in pegmatites, sedimentary rocks, and metamorphic quartzites
Uses & applications
Used in electronics, watchmaking, glass manufacturing, abrasives, and as a semi-precious gemstone in jewelry and lapidary arts
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress
Field identification & locations
Easily identified by its distinct hardness (scratches glass easily), lack of cleavage, and conchoidal fracture; found globally in virtually every rock type
