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 trigonal crystal system. Specific gravity is 2.65.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system. Specific gravity is 2.65.

Formation & geological history

Formed in hydrothermal veins, igneous pegmatites, and as detrital grains in sedimentary rocks over various geological eras.

Uses & applications

Used in electronics, glassmaking, precision instruments, and gemstone carving.

Geological facts

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

Field identification & locations

Identified by its high hardness, lack of cleavage, and characteristic conchoidal fracture. Found worldwide in nearly all geological environments.