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 opaque, conchoidal fracture, and hexagonal crystal system.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, transparent to opaque, conchoidal fracture, and hexagonal crystal system.

Formation & geological history

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

Uses & applications

Used in electronics, glassmaking, precision instruments, countertops, and gemstone 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 characteristic conchoidal fracture; found worldwide in virtually all geological settings.