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 colorless or white, but can be tinted by 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 colorless or white, but can be tinted by impurities.

Formation & geological history

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

Uses & applications

Widely used in electronics, glassmaking, precision instruments, abrasive materials, and ornamental jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties, generating an electric charge under mechanical stress.

Field identification & locations

Identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture. Found globally in almost all geological settings.