mineral
Quartz Crystal
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, clear to translucent color, vitreous luster, hexagonal crystal system, no distinct cleavage, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, clear to translucent color, vitreous luster, hexagonal crystal system, no distinct cleavage, specific gravity of 2.65
Formation & geological history
Formed in hydrothermal veins and pegmatites through the cooling and precipitation of silica-rich fluids over millions of years
Uses & applications
Used in electronics, oscillators, gemstones, glassware, and as a popular mineral specimen for collectors
Geological facts
Quartz is one of the most abundant and varied minerals on Earth, forming the foundation of the entire silicate mineral family
Field identification & locations
Easily identified by its characteristic 7 Mohs hardness, lack of cleavage, and distinct crystal habit; found worldwide in almost all geological environments
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