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, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

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Physical properties

Hardness of 7 on the Mohs scale, clear to white color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no true cleavage.

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, precision instruments, abrasive materials, and gemstone jewelry.

Geological facts

Quartz is one of the most abundant and varied minerals in Earth's continental crust, existing in numerous crystalline and microcrystalline varieties.

Field identification & locations

Identified by its high hardness (scratches glass), lack of cleavage, and vitreous luster; found globally in pegmatites, veins, and sandstones.