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, typically colorless or white, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, typically colorless or white, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

Formation & geological history

Forms primarily from cooling magma in igneous rocks, precipitation in hydrothermal veins, and deposition in sedimentary environments.

Uses & applications

Widely used in electronics for oscillators, glass manufacturing, abrasives, and as a popular gemstone and mineral specimen.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, generating electricity under mechanical stress.

Field identification & locations

Easily identified by its high hardness, inability to be scratched by steel, and distinct hexagonal crystal habit when well-formed.