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. Typically colorless or white, but impurities can create various colors.

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Physical properties

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

Formation & geological history

Forms in wide varieties of geological environments, including igneous, metamorphic, and sedimentary rocks, often crystallizing from silica-rich hydrothermal veins and magma.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, and as a gemstone or decorative mineral specimen in jewelry and collections.

Geological facts

Quartz is one of the most abundant and durable minerals in Earth's continental crust. Its piezoelectric properties make it essential for keeping time in electronic watches.

Field identification & locations

Easily identified by its high hardness (scratches glass) and distinctive conchoidal fracture. Found globally in almost all geological terrains.