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

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness 7 on Mohs scale, vitreous luster, hexagonal crystal system, transparent to translucent with no cleavage.

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Physical properties

Hardness 7 on Mohs scale, vitreous luster, hexagonal crystal system, transparent to translucent with no cleavage.

Formation & geological history

Forms primarily in igneous pegmatites and hydrothermal veins across diverse geological eras.

Uses & applications

Commonly used in jewelry, electronics as piezoelectric oscillators, optics, and mineral collections.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and displays distinct optical dispersion.

Field identification & locations

Identifiable by its 6-sided prismatic habit, hardness sufficient to scratch glass, and conchoidal fracture.