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, colorless to white, vitreous luster, hexagonal crystal system, conchoidal fracture with no cleavage.

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Physical properties

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

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through crystallization from silica-rich fluids or magma.

Uses & applications

Used in electronics, glassmaking, abrasives, and as a semi-precious gemstone in 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 worldwide in virtually all geological settings.