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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, typically white or brownish in this specimen, vitreous luster, hexagonal crystal system, and no true cleavage.

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Physical properties

Hardness of 7 on Mohs scale, typically white or brownish in this specimen, vitreous luster, hexagonal crystal system, and no true cleavage.

Formation & geological history

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

Uses & applications

Used extensively in electronics, glassmaking, construction materials, and as a popular gemstone or collector mineral.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, making it vital for watches and electronics.

Field identification & locations

Identified by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Found globally in almost all geological settings.