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, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, transparent, or milky with potential grey impurities.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, transparent, or milky with potential grey impurities.

Formation & geological history

Forms in wide varieties of igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich fluids.

Uses & applications

Used extensively in glassmaking, electronics, oscillators, abrasives, and ornamental carvings or jewelry.

Geological facts

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

Field identification & locations

Easily identified by its high hardness (scratches glass) and conchoidal fracture. It is found worldwide in virtually all geological settings.