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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, and lack of cleavage. Specific gravity is 2.65.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, and lack of cleavage. Specific gravity is 2.65.

Formation & geological history

Formed in a wide range of geological environments, frequently crystallizing from silica-rich hydrothermal veins and igneous pegmatites.

Uses & applications

Used extensively in electronics, glassmaking, precision instruments, and gemstone carving.

Geological facts

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

Field identification & locations

Identified easily by its high hardness, conchoidal fracture, and hexagonal crystal habit when well-formed.