Rock Identifier
Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Mohs hardness of 7, vitreous luster, conchoidal fracture, and trigonal crystal system with no cleavage.

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Physical properties

Mohs hardness of 7, vitreous luster, conchoidal fracture, and trigonal crystal system with no cleavage.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the cooling of magma or precipitation from hydrothermal solutions.

Uses & applications

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

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 distinct conchoidal fracture; found worldwide.