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, transparent to translucent, and trigonal crystal system with no distinct cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, transparent to translucent, and trigonal crystal system with no distinct cleavage.

Formation & geological history

Forms in wide varieties of igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich fluids.

Uses & applications

Widely used in electronics, glassmaking, abrasive powders, gemstones, and ornamental carvings.

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, lack of cleavage, and conchoidal fracture; commonly found worldwide in pegmatites, veins, and quartzites.