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, conchoidal fracture, and hexagonal crystal system.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system.

Formation & geological history

Formed in a wide range of geological environments, commonly precipitating from hydrothermal solutions or crystallizing from silica-rich magma.

Uses & applications

Used in electronics, glassmaking, abrasives, and as decorative gemstone or collector specimens.

Geological facts

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

Field identification & locations

Identified by its high hardness, lack of cleavage, and characteristic conchoidal fracture; found worldwide in virtually all rock types.