Rock Identifier
Quartz (Silicon Dioxide (SiO2)) — mineral
mineral

Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale, vitreous luster, colorless to varied hues, hexagonal crystal system, conchoidal fracture.

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Physical properties

Hardness of 7 on Mohs scale, vitreous luster, colorless to varied hues, hexagonal crystal system, conchoidal fracture.

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through cooling magmas or precipitation from silica-rich hydrothermal solutions.

Uses & applications

Widely used in electronics, glassmaking, precision instruments, and as a popular gemstone and mineral specimen.

Geological facts

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

Field identification & locations

Identify by its hardness scratching glass, lack of cleavage, and characteristic hexagonal crystal habit when well-formed.