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 trigonal crystal system. Typically colorless or white, but impurities create various colors.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system. Typically colorless or white, but impurities create various colors.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich fluids or cooling magma.

Uses & applications

Widely used in electronics, glassmaking, abrasives, and as a gemstone or collector mineral.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, making it useful in watches and electronics.

Field identification & locations

Identified by its high hardness (scratches glass), lack of cleavage, and distinct crystal form. Found globally in almost all geological settings.