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. It typically appears white, clear, or milky in raw forms.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. It typically appears white, clear, or milky in raw forms.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich solutions and magmas over geological timescales.

Uses & applications

Widely used in glassmaking, electronics, oscillators, abrasives, and as a semi-precious gemstone in jewelry.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it generates an electric charge under mechanical stress.

Field identification & locations

Easily identified by its high hardness (scratches glass) and lack of cleavage. Found worldwide in nearly every geological setting.