Rock Identifier
Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and crystallizes in the trigonal system.

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Physical properties

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and crystallizes in the trigonal system.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the cooling of magma or precipitation from hydrothermal solutions.

Uses & applications

Used in electronics, oscillators, glassmaking, optics, and as a popular gemstone in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.

Field identification & locations

Identified by its lack of cleavage, conchoidal fracture, and ability to scratch glass easily; found worldwide in virtually all geological settings.