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

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with clear to brown coloration.

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Physical properties

Hardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with clear to brown coloration.

Formation & geological history

Formed in a wide range of geological environments, predominantly crystallizing from silicate melts in igneous rocks or precipitating from hydrothermal solutions.

Uses & applications

Used extensively in electronics, glassmaking, precision instruments, abrasive materials, and ornamental jewelry.

Geological facts

Quartz is one of the most abundant and structurally varied minerals found in the Earth's continental crust.

Field identification & locations

Identify by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture found globally in veins and sedimentary sands.