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 without distinct cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, transparent to translucent, and conchoidal fracture without distinct cleavage.

Formation & geological history

Forms in a wide variety of geological environments including igneous, metamorphic, and sedimentary rocks from silica-rich solutions.

Uses & applications

Used extensively in electronics, glassmaking, precision instruments, and as a semi-precious gemstone in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.

Field identification & locations

Easily identified by its high hardness, inability to be scratched by steel, and characteristic conchoidal fracture.