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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage.

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Physical properties

Hardness of 7 on Mohs scale, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through crystallization from silica-rich fluids and magmas.

Uses & applications

Widely used in electronics, glassmaking, abrasives, and as a popular gemstone and crystal specimen.

Geological facts

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

Field identification & locations

Identified by its high hardness, conchoidal fracture, and lack of reactivity with acids; found globally in nearly all geological settings.