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

Clear Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, colorless to transparent, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

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Physical properties

Hardness of 7 on Mohs scale, colorless to transparent, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Formation & geological history

Forms primarily from hydrothermal veins, pegmatites, and igneous or metamorphic rocks as silica-rich fluids cool and crystallize over millions of years.

Uses & applications

Widely used in electronics for oscillators, precision optics, glassmaking, gemstone carving, and metaphysical crystal collecting.

Geological facts

Clear quartz is the most abundant mineral found at Earth's continental surface and exhibits strong piezoelectric properties.

Field identification & locations

Easily identified by its hardness of 7, lack of cleavage, and vitreous luster; found globally with major deposits in Brazil, the USA, and Madagascar.