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 exhibits no true cleavage with conchoidal fracture.

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Physical properties

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and exhibits no true cleavage with conchoidal fracture.

Formation & geological history

Forms primarily from cooling magma in igneous rocks, precipitation in hydrothermal veins, and as detrital grains in sedimentary environments.

Uses & applications

Widely used in electronics for oscillators, glassware manufacturing, gemstones, and abrasive materials.

Geological facts

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

Field identification & locations

Identified by its distinct hexagonal crystal habit, high hardness that scratches glass, and lack of cleavage; found globally.