
mineral
Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and trigonal crystal system with various colors including clear, white, gray, and brown.
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, conchoidal fracture, and trigonal crystal system with various colors including clear, white, gray, and brown.
Formation & geological history
Formed in hydrothermal veins, pegmatites, and as a primary component of igneous, metamorphic, and sedimentary rocks over millions of years.
Uses & applications
Widely 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 strong piezoelectric properties.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture; commonly found globally in almost all geological environments.