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 with colors ranging from clear to yellow-brown.

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Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with colors ranging from clear to yellow-brown.

Formation & geological history

Forms abundantly in igneous, metamorphic, and sedimentary environments through the crystallization of silica-rich melts or hydrothermal solutions.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, abrasive materials, and gemstone jewelry.

Geological facts

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

Field identification & locations

Identified easily by its high hardness, lack of cleavage, and distinct conchoidal fracture; found globally in nearly all geological settings.