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 with colors ranging from clear to white, grey, and brown.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with colors ranging from clear to white, grey, and brown.

Formation & geological history

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

Uses & applications

Used extensively in glassmaking, electronics, oscillators, abrasives, and as a semi-precious gemstone in jewelry.

Geological facts

Quartz is one of the most abundant and ubiquitous minerals found in the Earth's continental crust.

Field identification & locations

Identified by its high hardness that scratches glass and lack of cleavage; found globally in veins, pegmatites, and as sand.