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 trigonal crystal system with conchoidal fracture.

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Physical properties

Hardness of 7 on the Mohs scale, transparent to translucent with a vitreous luster, and trigonal crystal system with conchoidal fracture.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich solutions or magmas over geological timescales.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, and as a popular gemstone and ornamental mineral.

Geological facts

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

Field identification & locations

Identified by its high hardness, conchoidal fracture, and lack of cleavage; found globally in nearly all geological settings.