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, concoidal fracture, and specific gravity of 2.65.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, concoidal fracture, and specific gravity of 2.65.

Formation & geological history

Formed in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich solutions and magmas.

Uses & applications

Widely used in electronics, glassmaking, construction aggregates, countertops, and gemstone jewelry.

Geological facts

Quartz is one of the most abundant and durable minerals in Earth's continental crust, exhibiting piezoelectric properties.

Field identification & locations

Easily identified by its high hardness (scratches glass), lack of cleavage, and characteristic conchoidal fracture.