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

Quartz Crystal

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, typically clear or milky white, vitreous luster, hexagonal crystal system, and conchoidal fracture.

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Physical properties

Hardness of 7 on the Mohs scale, typically clear or milky white, vitreous luster, hexagonal crystal system, and conchoidal fracture.

Formation & geological history

Formed from cooling magma in hydrothermal veins and pegmatites, occurring across a wide geological timescale.

Uses & applications

Widely used in electronics, oscillator frequency control, glassmaking, abrasives, and decorative gemstone 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 distinct hexagonal prismatic crystal habit, lack of cleavage, and ability to scratch glass easily.