sedimentary

Quartz Sand Grain

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, clear to pale brown color, vitreous luster, hexagonal crystal system, and no distinct cleavage.

Identified November 10, 2026More sedimentary →

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Physical properties

Hardness of 7 on the Mohs scale, clear to pale brown color, vitreous luster, hexagonal crystal system, and no distinct cleavage.

Formation & geological history

Formed from the mechanical weathering and breakdown of primary igneous rocks like granite, often transported and rounded by water or wind over millions of years.

Uses & applications

Used primarily in geological studies, sedimentology, and as a fundamental component in glass manufacturing and concrete production.

Geological facts

Quartz is one of the most abundant and chemically resistant minerals on Earth's surface, allowing it to persist through multiple cycles of erosion.

Field identification & locations

Identified under magnification by its sub-rounded to rounded shape, high hardness, and lack of reaction to acid; commonly found in beaches and sandstone formations.