
mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. Typically colorless or white, but can appear in various colors due to impurities.
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 Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. Typically colorless or white, but can appear in various colors due to impurities.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through hydrothermal precipitation, crystallization from magma, or silica deposition.
Uses & applications
Used widely in glassmaking, electronics, abrasives, and decorative gemstones or ornamental carvings.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectric properties, making it essential for clocks and electronic oscillators.
Field identification & locations
Identified easily by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Found worldwide in nearly all geological settings.