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, typically white or colorless, vitreous luster, hexagonal crystal system, and no cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, typically white or colorless, vitreous luster, hexagonal crystal system, and no cleavage.

Formation & geological history

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

Uses & applications

Used extensively in electronics, glass manufacturing, abrasives, and as a gemstone or collector mineral.

Geological facts

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

Field identification & locations

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