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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Mohs hardness of 7, vitreous luster, colorless to various shades of white or yellow, hexagonal crystal system, conchoidal fracture.

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Physical properties

Mohs hardness of 7, vitreous luster, colorless to various shades of white or yellow, hexagonal crystal system, conchoidal fracture.

Formation & geological history

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

Uses & applications

Widely used in electronics, glassmaking, oscillators, abrasive materials, 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

Identified by its high hardness, conchoidal fracture, and lack of cleavage; found globally in veins, pegmatites, and sands.