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 no distinct cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with no distinct cleavage.

Formation & geological history

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

Uses & applications

Widely used in electronics, glassmaking, precision instruments, gemstones, and decorative ornaments.

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, inability to be scratched by steel, and characteristic conchoidal fracture; found worldwide.