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 conchoidal fracture with no true cleavage.

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Physical properties

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

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the cooling of silica-rich fluids or magma.

Uses & applications

Used extensively in glassmaking, electronics, oscillators, abrasives, and as a gemstone or specimen in jewelry.

Geological facts

Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties.

Field identification & locations

Easily identified by its high hardness (scratches glass), lack of cleavage, and six-sided crystal terminations when well-formed.