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, hexagonal crystal system, conchoidal fracture, and specific gravity of 2.65.

Identified More mineral →
Explore Quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Hardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, conchoidal fracture, and specific gravity of 2.65.

Formation & geological history

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

Uses & applications

Used in electronics, glassmaking, abrasives, gemstones, and ornamental carvings.

Geological facts

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

Field identification & locations

Easily identified by its lack of cleavage, high hardness that scratches glass, and distinct hexagonal crystal habit.